Untitled mining news story

Original announcement by research on

Company
Unico Silver Limited
Ticker
USL
Exchange
ASX
Region
Santa Cruz, Argentina
Primary commodity
Silver
Secondary commodities
Gold, Lead, Zinc
Document categories
Resource update, Metallurgy
Extracted
2026-10-13 17:57:48 UTC

Analysis by Minestarters Atlas

Atlas analysis published:

Minestarters Atlas analysis

Summary

Unico Silver announced a new Joaquin JORC resource of 45.3 Mt at 115 g/t AgEq for 167 Moz AgEq, with most tonnes classified as Indicated; the release compares it with a superseded 2013 estimate rather than announcing individual drill assays. Restated Cerro Leon resources take the reported portfolio to 330 Moz AgEq, while the PLUS 150 table reports 212 Moz AgEq supporting a planned Q3 2026 PFS. Historical metallurgical work supports conventional cyanidation, but the resources are not reserves and several headline, table and appendix totals differ.

Reasoning: The current event is a substantial new Joaquin resource estimate with a predominantly Indicated classification and disclosed reporting assumptions. Development economics remain subject to the forthcoming PFS, and inconsistent totals reduce extraction and comparison confidence.

Positive factors

  • New Joaquin JORC resource reports 167 Moz AgEq, including 123 Moz silver.
  • Most Joaquin tonnes are Indicated, supporting progression toward the planned PFS.
  • Resource reporting discloses a 40 g/t AgEq cut-off, equivalent assumptions, independent Competent Person and QA/QC.
  • Historical metallurgy and industrial processing support conventional whole-ore cyanidation.

Negative factors

  • Mineral Resources are not Ore Reserves and economic viability remains unproven.
  • The growth comparison uses a superseded 2013 foreign estimate and accounts for historical depletion; it is not a routine like-for-like annual comparison.
  • Headline, table and appendix figures contain differences beyond uniform presentation, including gold ounces, Indicated tonnes and combined tonnes.
  • The current estimate has no external audit, and additional work is required for detailed mine scheduling.

Rubric flags

  • Resource effective dates — March 2026 and September 2025 are month-only table vintages; do not fabricate exact effective or historical announcement dates. Only the foreign estimate has an explicit effective date, 2013-02-15.
  • Historical comparison and prior fields — Retain the 2013 estimate as historical facts. Do not populate prior values on new rows as a like-for-like comparison because cut-off, depletion and scope comparability are not fully established.
  • Category missing from oxidation rows — Appendix B domain rows have no category split. Retain their grades and tonnes without inventing a category; the overall total includes the independently disclosed Indicated and Inferred mix.
  • Combined and duplicate totals — Combined portfolio rows include Indicated and Inferred constituents and use inferred under the combined-category rule. Tables 1, 5, 6 and the appendices overlap; do not add these inventories together.
  • Appendix A blank category cells — Breccia Puntudo has no Indicated entry. Its first populated seven-cell group is Inferred, supported by the explicit maiden inferred-resource statement; preserve the absent Indicated cells as blank table cells.
  • Recovery assumptions versus test results — The 82% silver and 87% gold figures are MRE equivalent assumptions, not separately identified achieved test results. The drill-reporting appendix's 90% and 95% assumptions apply to another formula and must not replace the MRE assumptions.
  • Production extraction schema — Table 3 reports historical production depletion, not a resource or reserve category. Preserve it in the raw table without assigning a fabricated resource category or production fields.
  • Inconsistent technical disclosures — Preserve source figures without reconciliation. The release varies gold totals, silver grades, Indicated tonnes, combined tonnes, parent-block size and G&A units between sections.
  • PLUS 150 oxidation scope — Table 6 includes the full Joaquin resource while Appendix B includes fresh material. Do not label every Joaquin PLUS 150 row oxide solely from the portfolio narrative.

Facts used in scoring: 88

Classification and evidence

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: The current announcement revises the Joaquin resource to 45.3 Mt at 115 g/t AgEq.

Evidence · text

“Unico Silver reports an updated MRE for the Joaquin project”

Contained Metal Growthpositive

True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.

Why it applies: Joaquin reports a 143% increase in contained AgEq since acquisition, with historical depletion considered.

Evidence · text

“representing a 143% increase”

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: Most Joaquin tonnes are reported in the higher-confidence Indicated category.

Evidence · text

“78% of tonnes in the Indicated category”

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: The new Joaquin estimate is expressly reported under JORC 2012.

Evidence · text

“The Mineral Resource Estimate (MRE) is reported in accordance with the JORC Code (2012).”

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: Rodrigo Peralta is the named responsible Joaquin Competent Person and consents to inclusion.

Evidence · text

“Mr Rodrigo Peralta FAusIMM (CP), a Competent Person who is an employee of INSA”

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: The current Joaquin resource uses a stated 40 g/t AgEq reporting cut-off.

Evidence · text

“The MRE for the Joaquin project is reported above 40 g/t AgEq cut-off grade.”

PFS-Supportingneutral

Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.

Why it applies: The resource supports a planned maiden PFS rather than a completed economic study.

Evidence · text

“Maiden Pre-Feasibility Study on track for Q3 2026”

Free Millingpositive

Simple, clean ore amenable to standard processing without oxidation.

Why it applies: The PLUS 150 inventory is described as amenable to conventional whole-ore cyanidation.

Evidence · text

“Plus 150 Mineral Resources are amenable to conventional open pit mining and whole ore cyanidation (Merrill-Crowe).”

Mill Routeneutral

Processing via mill or concentrator (CIL, CIP, tank leach, flotation).

Why it applies: Historical metallurgy supports whole-ore cyanidation with Merrill–Crowe recovery.

Evidence · text

“whole-ore cyanidation followed by Merrill–Crowe recovery as the base- case processing route”

Multi-Domain Testedpositive

Variability across ore domains (oxide, transition, fresh) has been addressed.

Why it applies: Historical test programs used over 100 composites covering grades, depths and oxidation states.

Evidence · text

“over 100 composite samples derived from more than 1,900 individual drill core intervals”

Disclosure Inconsistenciesnegative · Story-specific tag

No canonical definition is currently available.

Why it applies: Table 1 reports 522 koz gold while the highlight and Appendix B report 521 koz; other totals also differ.

Evidence · text

“Mineral Resource includes 123Moz Ag and 521koz Au”

Heap Leach Routeneutral

Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.

Why it applies: the document describes a heap_leach route ("column leach")

Gravity Routeneutral

Gravity separation forms a material part of the flowsheet.

Why it applies: the document describes a gravity route ("gravity")

Extracted facts

Stored fact records: 88. Some facts used in scoring do not have a stored record.

Resource Estimates (88)

indicatedJoaquin · silverTonnes: 34500000Grade: 93Grade Unit: g/tContained Metal: 103Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:baf417349eb9d20c87ac
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
34500000
Grade
93
Grade Unit
g/t
Contained Metal
103
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
118
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Table 6 Joaquin row retained separately; material type is not forced to oxide because Appendix B shows mixed and fresh material.

Positive factors

  • Indicated inventory included in PLUS 150 development table.

Negative factors

  • Repeats Table 1; inclusion of the entire resource conflicts with oxide-only wording elsewhere.

Evidence · table

“93”

Context: 34.5

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · goldTonnes: 34500000Grade: 0.3Grade Unit: g/tContained Metal: 334Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:baf417349eb9d20c87ac
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
34500000
Grade
0.3
Grade Unit
g/t
Contained Metal
334
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
118
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Printed Table 6 byproduct row, not additional inventory.

Positive factors

  • Indicated gold credit in development table.

Negative factors

  • Repeats Table 1; free-milling scope is inconsistently described.

Evidence · table

“0.30”

Context: 34.5

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 10800000Grade: 59Grade Unit: g/tContained Metal: 20.6Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:bfb3c99adc801b44eb6e
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
10800000
Grade
59
Grade Unit
g/t
Contained Metal
20.6
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
106
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Appendix A category total, not additional inventory.

Positive factors

  • Additional resource scale.

Negative factors

  • Inferred; Appendix A contained silver differs from Table 1.

Evidence · table

“59”

Context: 10.8

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 10800000Grade: 0.55Grade Unit: g/tContained Metal: 190Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:bfb3c99adc801b44eb6e
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
10800000
Grade
0.55
Grade Unit
g/t
Contained Metal
190
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
106
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Printed Appendix A category total.

Positive factors

  • Gold credit.

Negative factors

  • Inferred and repeats Table 1 inventory.

Evidence · table

“0.55”

Context: 10.8

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 45300000Grade: 84Grade Unit: g/tContained Metal: 123Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:946107953f6710222b06
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
45300000
Grade
84
Grade Unit
g/t
Contained Metal
123
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
115
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Preserves Appendix A's printed combined-category total.

Positive factors

  • Large total silver inventory, mostly Indicated.

Negative factors

  • Appendix A silver grade is 84 g/t versus 85 g/t in Table 1; overlaps other totals.

Evidence · table

“84”

Context: 45.3

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 45300000Grade: 0.36Grade Unit: g/tContained Metal: 522Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:946107953f6710222b06
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
45300000
Grade
0.36
Grade Unit
g/t
Contained Metal
522
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
115
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Appendix A total retained without reconciliation.

Positive factors

  • Meaningful gold credit.

Negative factors

  • Printed 522 koz differs from Appendix B and headline; overlaps other totals.

Evidence · table

“0.36”

Context: 45.3

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · silverTonnes: 15700000Grade: 65.2Grade Unit: mozContained Metal: 65.2Contained Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Effective date
2013-02-15T00:00:00.000Z
Reporting standards
ni_43_101, other
QP Signed
Yes
Qualified person names
Luis Oviedo H
Resource group id
resource:156de204c24bfa7c6bb0

Resource Data

Category
indicated
Tonnes
15700000
Grade
65.2
Grade Unit
moz
Contained Metal
65.2
Contained Unit
moz

Prior Estimate

Resource Date
2013-02-15

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Historical comparison only, not a current resource.

Positive factors

  • Historical M&I baseline with named QP.

Negative factors

  • Superseded foreign estimate; cut-off not supplied here.

Evidence · table

“65.2”

Context: 15.7

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Stale Estimatenegative

Effective date is >2 years old — data currency concern, may not reflect current geological understanding.

Why it applies: effective date is 13.7 years before this release

indicatedJoaquin · goldTonnes: 15700000Grade: 0.12Grade Unit: g/tContained Metal: 61.1Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Effective date
2013-02-15T00:00:00.000Z
Reporting standards
ni_43_101, other
QP Signed
Yes
Qualified person names
Luis Oviedo H
Resource group id
resource:156de204c24bfa7c6bb0

Resource Data

Category
indicated
Tonnes
15700000
Grade
0.12
Grade Unit
g/t
Contained Metal
61.1
Contained Unit
koz

Prior Estimate

Resource Date
2013-02-15

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Restated M&I byproduct baseline.

Positive factors

  • Historical gold credit.

Negative factors

  • Superseded estimate; very low gold grade; cut-off undisclosed.

Evidence · table

“0.12”

Context: 15.7

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Stale Estimatenegative

Effective date is >2 years old — data currency concern, may not reflect current geological understanding.

Why it applies: effective date is 13.7 years before this release

inferredJoaquin · silverTonnes: 1000000Grade: 3.1Grade Unit: mozContained Metal: 3.1Contained Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Effective date
2013-02-15T00:00:00.000Z
Reporting standards
ni_43_101, other
QP Signed
Yes
Qualified person names
Luis Oviedo H
Resource group id
resource:550a5ece4421f673fe03

Resource Data

Category
inferred
Tonnes
1000000
Grade
3.1
Grade Unit
moz
Contained Metal
3.1
Contained Unit
moz

Prior Estimate

Resource Date
2013-02-15

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Small historical Inferred component.

Positive factors

  • Historical comparison baseline.

Negative factors

  • Inferred and superseded; cut-off undisclosed.

Evidence · table

“3.1”

Context: 1

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Stale Estimatenegative

Effective date is >2 years old — data currency concern, may not reflect current geological understanding.

Why it applies: effective date is 13.7 years before this release

inferredJoaquin · goldTonnes: 1000000Grade: 0.12Grade Unit: g/tContained Metal: 3.7Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Effective date
2013-02-15T00:00:00.000Z
Reporting standards
ni_43_101, other
QP Signed
Yes
Qualified person names
Luis Oviedo H
Resource group id
resource:550a5ece4421f673fe03

Resource Data

Category
inferred
Tonnes
1000000
Grade
0.12
Grade Unit
g/t
Contained Metal
3.7
Contained Unit
koz

Prior Estimate

Resource Date
2013-02-15

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Historical gold credit with little standalone significance.

Positive factors

  • Disclosed historical byproduct quantity.

Negative factors

  • Small, low-grade, Inferred and superseded.

Evidence · table

“0.12”

Context: 1

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Stale Estimatenegative

Effective date is >2 years old — data currency concern, may not reflect current geological understanding.

Why it applies: effective date is 13.7 years before this release

inferredJoaquin · silverTonnes: 16700000Grade: 68.3Grade Unit: mozContained Metal: 68.3Contained Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Effective date
2013-02-15T00:00:00.000Z
Reporting standards
ni_43_101, other
QP Signed
Yes
Qualified person names
Luis Oviedo H
Resource group id
resource:64e5633eaf25dd1c20dd

Resource Data

Category
inferred
Tonnes
16700000
Grade
68.3
Grade Unit
moz
Contained Metal
68.3
Contained Unit
moz

Prior Estimate

Resource Date
2013-02-15

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Historical total includes M&I and Inferred; overlaps its component rows.

Positive factors

  • Printed historical total establishes comparison scale.

Negative factors

  • Superseded and not directly comparable without cut-off and depletion adjustments.

Evidence · table

“68.3”

Context: 16.7

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Stale Estimatenegative

Effective date is >2 years old — data currency concern, may not reflect current geological understanding.

Why it applies: effective date is 13.7 years before this release

inferredJoaquin · goldTonnes: 16700000Grade: 0.12Grade Unit: g/tContained Metal: 64.2Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Effective date
2013-02-15T00:00:00.000Z
Reporting standards
ni_43_101, other
QP Signed
Yes
Qualified person names
Luis Oviedo H
Resource group id
resource:64e5633eaf25dd1c20dd

Resource Data

Category
inferred
Tonnes
16700000
Grade
0.12
Grade Unit
g/t
Contained Metal
64.2
Contained Unit
koz

Prior Estimate

Resource Date
2013-02-15

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Historical combined-category total, not new gold inventory.

Positive factors

  • Printed historical total.

Negative factors

  • Superseded low-grade gold credit; cut-off undisclosed.

Evidence · table

“0.12”

Context: 16.7

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Stale Estimatenegative

Effective date is >2 years old — data currency concern, may not reflect current geological understanding.

Why it applies: effective date is 13.7 years before this release

indicatedCerro Leon · silverTonnes: 9400000Grade: 95Grade Unit: g/tContained Metal: 28.9Contained Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:cc9c04ad1e60e0ca3f0d

Resource Data

Category
indicated
Tonnes
9400000
Grade
95
Grade Unit
g/t
Contained Metal
28.9
Contained Unit
moz

Metal Equivalent

Metal Eq. Grade
190
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Existing Cerro Leon resource provides portfolio context.

Positive factors

  • Indicated silver inventory.

Negative factors

  • September 2025 restatement; global estimate cut-off and equivalent formula not disclosed for this scope.

Evidence · table

“95”

Context: 9.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedCerro Leon · goldTonnes: 9400000Grade: 0.54Grade Unit: g/tContained Metal: 165Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:cc9c04ad1e60e0ca3f0d

Resource Data

Category
indicated
Tonnes
9400000
Grade
0.54
Grade Unit
g/t
Contained Metal
165
Contained Unit
koz

Metal Equivalent

Metal Eq. Grade
190
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Byproduct component of the existing global resource.

Positive factors

  • Indicated gold credit.

Negative factors

  • Historical restatement; cut-off not disclosed.

Evidence · table

“0.54”

Context: 9.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedCerro Leon · leadTonnes: 9400000Grade: 0.57Grade Unit: %Contained Metal: 119Contained Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
lead
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:cc9c04ad1e60e0ca3f0d

Resource Data

Category
indicated
Tonnes
9400000
Grade
0.57
Grade Unit
%
Contained Metal
119
Contained Unit
mlb

Metal Equivalent

Metal Eq. Grade
190
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Restated base-metal credit, not a new result.

Positive factors

  • Indicated lead inventory disclosed.

Negative factors

  • Low standalone grade; current recovery and payability not supplied.

Evidence · table

“0.57”

Context: 9.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedCerro Leon · zincTonnes: 9400000Grade: 0.95Grade Unit: %Contained Metal: 199Contained Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
zinc
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:cc9c04ad1e60e0ca3f0d

Resource Data

Category
indicated
Tonnes
9400000
Grade
0.95
Grade Unit
%
Contained Metal
199
Contained Unit
mlb

Metal Equivalent

Metal Eq. Grade
190
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Historical zinc credit within the silver-led estimate.

Positive factors

  • Indicated zinc inventory disclosed.

Negative factors

  • Low standalone grade; recovery and payability not supplied.

Evidence · table

“0.95”

Context: 9.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · silverTonnes: 21600000Grade: 48Grade Unit: g/tContained Metal: 33.1Contained Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:689400e5fa0c540cd74a

Resource Data

Category
inferred
Tonnes
21600000
Grade
48
Grade Unit
g/t
Contained Metal
33.1
Contained Unit
moz

Metal Equivalent

Metal Eq. Grade
154
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Lower-confidence component dominates Cerro Leon global tonnes.

Positive factors

  • Additional silver scale.

Negative factors

  • Inferred, restated and lower grade; scope-specific cut-off not disclosed.

Evidence · table

“48”

Context: 21.6

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · goldTonnes: 21600000Grade: 0.55Grade Unit: g/tContained Metal: 398Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:689400e5fa0c540cd74a

Resource Data

Category
inferred
Tonnes
21600000
Grade
0.55
Grade Unit
g/t
Contained Metal
398
Contained Unit
koz

Metal Equivalent

Metal Eq. Grade
154
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Existing byproduct resource needs conversion.

Positive factors

  • Gold contributes to portfolio scale.

Negative factors

  • Inferred and historical; low standalone grade.

Evidence · table

“0.55”

Context: 21.6

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · leadTonnes: 21600000Grade: 0.54Grade Unit: %Contained Metal: 245Contained Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
lead
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:689400e5fa0c540cd74a

Resource Data

Category
inferred
Tonnes
21600000
Grade
0.54
Grade Unit
%
Contained Metal
245
Contained Unit
mlb

Metal Equivalent

Metal Eq. Grade
154
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Historical base-metal inventory with uncertain economic contribution.

Positive factors

  • Disclosed lead quantity.

Negative factors

  • Inferred low-grade credit; recovery and payability not supplied.

Evidence · table

“0.54”

Context: 21.6

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · zincTonnes: 21600000Grade: 1.3Grade Unit: %Contained Metal: 580Contained Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
zinc
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:689400e5fa0c540cd74a

Resource Data

Category
inferred
Tonnes
21600000
Grade
1.3
Grade Unit
%
Contained Metal
580
Contained Unit
mlb

Metal Equivalent

Metal Eq. Grade
154
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Restated zinc credit rather than current growth.

Positive factors

  • Substantial disclosed zinc quantity.

Negative factors

  • Inferred and low standalone grade; processing economics unresolved.

Evidence · table

“1.3”

Context: 21.6

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · silverTonnes: 31000000Grade: 62Grade Unit: g/tContained Metal: 62Contained Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:01a3ee2c2ab11c9582d8

Resource Data

Category
inferred
Tonnes
31000000
Grade
62
Grade Unit
g/t
Contained Metal
62
Contained Unit
moz

Metal Equivalent

Metal Eq. Grade
161
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Printed September 2025 global total, not a new Cerro Leon estimate.

Positive factors

  • Significant total silver resource.

Negative factors

  • Mostly Inferred tonnes; historical total overlaps components.

Evidence · table

“62”

Context: 31

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · goldTonnes: 31000000Grade: 0.55Grade Unit: g/tContained Metal: 548Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:01a3ee2c2ab11c9582d8

Resource Data

Category
inferred
Tonnes
31000000
Grade
0.55
Grade Unit
g/t
Contained Metal
548
Contained Unit
koz

Metal Equivalent

Metal Eq. Grade
161
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Preserves the stated 548 koz total without recalculation.

Positive factors

  • Meaningful gold credit.

Negative factors

  • Printed total differs from component sum; mostly Inferred.

Evidence · table

“0.55”

Context: 31

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · leadTonnes: 31000000Grade: 0.54Grade Unit: %Contained Metal: 364Contained Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
lead
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:01a3ee2c2ab11c9582d8

Resource Data

Category
inferred
Tonnes
31000000
Grade
0.54
Grade Unit
%
Contained Metal
364
Contained Unit
mlb

Metal Equivalent

Metal Eq. Grade
161
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Historical aggregate lead inventory.

Positive factors

  • Total lead quantity disclosed.

Negative factors

  • Mostly Inferred low-grade credit; total overlaps components.

Evidence · table

“0.54”

Context: 31

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · zincTonnes: 31000000Grade: 1.1Grade Unit: %Contained Metal: 778Contained Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
zinc
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:01a3ee2c2ab11c9582d8

Resource Data

Category
inferred
Tonnes
31000000
Grade
1.1
Grade Unit
%
Contained Metal
778
Contained Unit
mlb

Metal Equivalent

Metal Eq. Grade
161
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Historical zinc total retained in its printed units.

Positive factors

  • Large disclosed zinc inventory.

Negative factors

  • Mostly Inferred; printed contained total differs from component sum.

Evidence · table

“1.1”

Context: 31

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin and Cerro Leon · silverTonnes: 76300000Grade: 76Grade Unit: g/tContained Metal: 185Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin and Cerro Leon
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta, Ian Taylor
Resource group id
resource:46ac0cc89a87e8c38e2b

Resource Data

Category
inferred
Tonnes
76300000
Grade
76
Grade Unit
g/t
Contained Metal
185
Contained Unit
moz

Metal Equivalent

Metal Eq. Grade
135
Metal Eq. Unit
g/t AgEq

Review

Needs Review
No
Historical
No

Reasoning: Portfolio total includes Indicated and Inferred constituents and is not an independent deposit estimate.

Positive factors

  • Large combined silver inventory.

Negative factors

  • Combines new and historical estimates; table tonnes differ from headline; overlaps project totals.

Evidence · table

“76”

Context: 76.3

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin and Cerro Leon · goldTonnes: 76300000Grade: 0.4Grade Unit: g/tContained Metal: 1084Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin and Cerro Leon
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta, Ian Taylor
Resource group id
resource:46ac0cc89a87e8c38e2b

Resource Data

Category
inferred
Tonnes
76300000
Grade
0.4
Grade Unit
g/t
Contained Metal
1084
Contained Unit
koz

Metal Equivalent

Metal Eq. Grade
135
Metal Eq. Unit
g/t AgEq

Review

Needs Review
No
Historical
No

Reasoning: Printed aggregate preserved without attempting to reconcile the source.

Positive factors

  • Significant portfolio gold credit.

Negative factors

  • Combined contained gold does not match project table totals; includes Inferred material.

Evidence · table

“0.4”

Context: 76.3

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin and Cerro Leon · leadTonnes: 76300000Grade: 0.2Grade Unit: %Contained Metal: 364Contained Unit: mlbView all details
Link to this fact

Identity

Project
Joaquin and Cerro Leon
Commodity
lead
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta, Ian Taylor
Resource group id
resource:46ac0cc89a87e8c38e2b

Resource Data

Category
inferred
Tonnes
76300000
Grade
0.2
Grade Unit
%
Contained Metal
364
Contained Unit
mlb

Metal Equivalent

Metal Eq. Grade
135
Metal Eq. Unit
g/t AgEq

Review

Needs Review
No
Historical
No

Reasoning: Aggregate disclosure is not evidence of new lead mineralisation.

Positive factors

  • Portfolio lead quantity disclosed.

Negative factors

  • Very low blended grade; inventory comes from restated Cerro Leon resource.

Evidence · table

“0.2”

Context: 76.3

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin and Cerro Leon · zincTonnes: 76300000Grade: 0.5Grade Unit: %Contained Metal: 779Contained Unit: mlbView all details
Link to this fact

Identity

Project
Joaquin and Cerro Leon
Commodity
zinc
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta, Ian Taylor
Resource group id
resource:46ac0cc89a87e8c38e2b

Resource Data

Category
inferred
Tonnes
76300000
Grade
0.5
Grade Unit
%
Contained Metal
779
Contained Unit
mlb

Metal Equivalent

Metal Eq. Grade
135
Metal Eq. Unit
g/t AgEq

Review

Needs Review
No
Historical
No

Reasoning: Printed combined zinc disclosure, primarily historical inventory.

Positive factors

  • Portfolio zinc quantity disclosed.

Negative factors

  • Low blended grade; 779 Mlb differs from Cerro Leon's 778 Mlb total.

Evidence · table

“0.5”

Context: 76.3

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedCerro Leon · silverTonnes: 4700000Grade: 136Grade Unit: g/tContained Metal: 20.7Contained Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:7137a94f0eece29651dc
Material type
oxide

Resource Data

Category
indicated
Tonnes
4700000
Grade
136
Grade Unit
g/t
Contained Metal
20.7
Contained Unit
moz

Metal Equivalent

Metal Eq. Grade
197
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: PLUS 150 subset offers stronger grade and development relevance than the global blended estimate.

Positive factors

  • Indicated pit-constrained oxide silver with free-milling route.

Negative factors

  • Restated subset; Cerro Leon-specific cut-off not disclosed.

Evidence · table

“136”

Context: 4.7

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedCerro Leon · goldTonnes: 4700000Grade: 0.63Grade Unit: g/tContained Metal: 95Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:7137a94f0eece29651dc
Material type
oxide

Resource Data

Category
indicated
Tonnes
4700000
Grade
0.63
Grade Unit
g/t
Contained Metal
95
Contained Unit
koz

Metal Equivalent

Metal Eq. Grade
197
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Gold supports the silver-led development inventory.

Positive factors

  • Indicated gold credit in free-milling subset.

Negative factors

  • Low standalone grade; historical subset.

Evidence · table

“0.63”

Context: 4.7

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · silverTonnes: 3400000Grade: 85Grade Unit: g/tContained Metal: 9.2Contained Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:785ce220c485ebd48b01
Material type
oxide

Resource Data

Category
inferred
Tonnes
3400000
Grade
85
Grade Unit
g/t
Contained Metal
9.2
Contained Unit
moz

Metal Equivalent

Metal Eq. Grade
136
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Potential supplementary inventory subject to geological conversion.

Positive factors

  • Pit-constrained free-milling silver inventory.

Negative factors

  • Inferred; scope-specific cut-off not disclosed.

Evidence · table

“85”

Context: 3.4

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · goldTonnes: 3400000Grade: 0.52Grade Unit: g/tContained Metal: 56.9Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:785ce220c485ebd48b01
Material type
oxide

Resource Data

Category
inferred
Tonnes
3400000
Grade
0.52
Grade Unit
g/t
Contained Metal
56.9
Contained Unit
koz

Metal Equivalent

Metal Eq. Grade
136
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Restated supplementary byproduct quantity.

Positive factors

  • Gold credit in oxide subset.

Negative factors

  • Inferred and low standalone grade.

Evidence · table

“0.52”

Context: 3.4

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin and Cerro Leon · silverTonnes: 53400000Grade: 89Grade Unit: g/tContained Metal: 153Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin and Cerro Leon
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta, Ian Taylor
Resource group id
resource:075a6f899d47a0b4712c

Resource Data

Category
inferred
Tonnes
53400000
Grade
89
Grade Unit
g/t
Contained Metal
153
Contained Unit
moz

Metal Equivalent

Metal Eq. Grade
124
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Reasoning: Printed PLUS 150 total combines two projects and resource categories.

Positive factors

  • Large free-milling development inventory.

Negative factors

  • Includes Inferred material; overlaps components; oxide-only description conflicts with Joaquin oxidation breakdown.

Evidence · table

“89”

Context: 53.4

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin and Cerro Leon · goldTonnes: 53400000Grade: 0.39Grade Unit: g/tContained Metal: 673Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin and Cerro Leon
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta, Ian Taylor
Resource group id
resource:075a6f899d47a0b4712c

Resource Data

Category
inferred
Tonnes
53400000
Grade
0.39
Grade Unit
g/t
Contained Metal
673
Contained Unit
koz

Metal Equivalent

Metal Eq. Grade
124
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Reasoning: Disclosed PLUS 150 gold total retained as printed.

Positive factors

  • Gold supports combined free-milling resource value.

Negative factors

  • Low standalone grade; total includes Inferred and overlaps component rows.

Evidence · table

“0.39”

Context: 53.4

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · silverTonnes: 11400000Grade: 129Grade Unit: g/tContained Metal: 47.4Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:212008c49b868a0ae9e7
Deposit or zone
La Negra
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
11400000
Grade
129
Grade Unit
g/t
Contained Metal
47.4
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
147
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: A substantial, comparatively stronger-grade Joaquin component.

Positive factors

  • Indicated silver at 129 g/t.

Negative factors

  • Resource economics unproven.

Evidence · table

“129”

Context: 11.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · goldTonnes: 11400000Grade: 0.21Grade Unit: g/tContained Metal: 76Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:212008c49b868a0ae9e7
Deposit or zone
La Negra
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
11400000
Grade
0.21
Grade Unit
g/t
Contained Metal
76
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
147
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Modest byproduct contribution to a silver-rich zone.

Positive factors

  • Indicated gold credit.

Negative factors

  • Very low standalone gold grade.

Evidence · table

“0.21”

Context: 11.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 2800000Grade: 103Grade Unit: g/tContained Metal: 9.1Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:d902e7fc1a2335dffd59
Deposit or zone
La Negra
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
2800000
Grade
103
Grade Unit
g/t
Contained Metal
9.1
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
123
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Adds moderate scale requiring resource conversion.

Positive factors

  • Additional silver at 103 g/t.

Negative factors

  • Inferred classification.

Evidence · table

“103”

Context: 2.8

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 2800000Grade: 0.23Grade Unit: g/tContained Metal: 20Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:d902e7fc1a2335dffd59
Deposit or zone
La Negra
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
2800000
Grade
0.23
Grade Unit
g/t
Contained Metal
20
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
123
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Minor byproduct inventory.

Positive factors

  • Disclosed gold credit.

Negative factors

  • Inferred, small and low grade.

Evidence · table

“0.23”

Context: 2.8

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 14200000Grade: 124Grade Unit: g/tContained Metal: 56Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:3d94cca1e258d5ddae5c
Deposit or zone
La Negra
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
14200000
Grade
124
Grade Unit
g/t
Contained Metal
56
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
142
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: La Negra total includes both resource categories.

Positive factors

  • Large silver zone, mostly Indicated tonnes.

Negative factors

  • Printed contained total differs from component sum; total overlaps components.

Evidence · table

“124”

Context: 14.2

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 14200000Grade: 0.21Grade Unit: g/tContained Metal: 96Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:3d94cca1e258d5ddae5c
Deposit or zone
La Negra
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
14200000
Grade
0.21
Grade Unit
g/t
Contained Metal
96
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
142
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Printed zone gold total.

Positive factors

  • Mostly Indicated gold credit.

Negative factors

  • Low standalone grade; total overlaps components.

Evidence · table

“0.21”

Context: 14.2

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · silverTonnes: 14700000Grade: 51Grade Unit: g/tContained Metal: 23.9Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:fedf9923ef7ec1b60e2d
Deposit or zone
La Negra SE
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
14700000
Grade
51
Grade Unit
g/t
Contained Metal
23.9
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
87
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: New discovery contribution is material through scale and confidence.

Positive factors

  • Discovery adds substantial Indicated tonnes.

Negative factors

  • Lower silver grade than La Negra.

Evidence · table

“51”

Context: 14.7

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · goldTonnes: 14700000Grade: 0.42Grade Unit: g/tContained Metal: 199Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:fedf9923ef7ec1b60e2d
Deposit or zone
La Negra SE
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
14700000
Grade
0.42
Grade Unit
g/t
Contained Metal
199
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
87
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Gold materially supplements lower-grade silver in this discovery.

Positive factors

  • Indicated gold makes a meaningful equivalent-grade contribution.

Negative factors

  • Low standalone gold grade.

Evidence · table

“0.42”

Context: 14.7

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 2200000Grade: 43Grade Unit: g/tContained Metal: 3.1Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:085e2afe81ad6f19a2e9
Deposit or zone
La Negra SE
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
2200000
Grade
43
Grade Unit
g/t
Contained Metal
3.1
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
74
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Small lower-confidence extension of the zone resource.

Positive factors

  • Adds discovery inventory.

Negative factors

  • Inferred and relatively low silver grade.

Evidence · table

“43”

Context: 2.2

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 2200000Grade: 0.36Grade Unit: g/tContained Metal: 26Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:085e2afe81ad6f19a2e9
Deposit or zone
La Negra SE
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
2200000
Grade
0.36
Grade Unit
g/t
Contained Metal
26
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
74
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Limited standalone significance.

Positive factors

  • Gold supplements silver grade.

Negative factors

  • Inferred and low-grade byproduct.

Evidence · table

“0.36”

Context: 2.2

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 17000000Grade: 50Grade Unit: g/tContained Metal: 27Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:bbbf6d05981d5b07a45f
Deposit or zone
La Negra SE
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
17000000
Grade
50
Grade Unit
g/t
Contained Metal
27
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
85
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Printed combined-category La Negra SE total.

Positive factors

  • Large discovery resource, predominantly Indicated.

Negative factors

  • Lower silver grade; total overlaps component rows.

Evidence · table

“50”

Context: 17.0

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 17000000Grade: 0.41Grade Unit: g/tContained Metal: 225Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:bbbf6d05981d5b07a45f
Deposit or zone
La Negra SE
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
17000000
Grade
0.41
Grade Unit
g/t
Contained Metal
225
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
85
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Gold supports the new zone's combined-metal value.

Positive factors

  • Material gold credit, mostly Indicated tonnes.

Negative factors

  • Low standalone grade; total overlaps components.

Evidence · table

“0.41”

Context: 17.0

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · silverTonnes: 5800000Grade: 137Grade Unit: g/tContained Metal: 25.7Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:6c33a9d00d4af2173d3a
Deposit or zone
La Morocha
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
5800000
Grade
137
Grade Unit
g/t
Contained Metal
25.7
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
149
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Higher-grade component with useful historical processing context.

Positive factors

  • Indicated silver at comparatively stronger grade; historical plant experience.

Negative factors

  • Remaining resource is not a reserve.

Evidence · table

“137”

Context: 5.8

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · goldTonnes: 5800000Grade: 0.14Grade Unit: g/tContained Metal: 27Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:6c33a9d00d4af2173d3a
Deposit or zone
La Morocha
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
5800000
Grade
0.14
Grade Unit
g/t
Contained Metal
27
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
149
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Minor byproduct to silver.

Positive factors

  • Indicated gold credit.

Negative factors

  • Very low gold grade and small quantity.

Evidence · table

“0.14”

Context: 5.8

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 700000Grade: 54Grade Unit: g/tContained Metal: 1.3Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:ef1cc161441c03e2cb7d
Deposit or zone
La Morocha
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
700000
Grade
54
Grade Unit
g/t
Contained Metal
1.3
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
81
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Limited incremental scale.

Positive factors

  • Adds silver inventory.

Negative factors

  • Small, lower-grade Inferred component.

Evidence · table

“54”

Context: 0.7

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 700000Grade: 0.32Grade Unit: g/tContained Metal: 7Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:ef1cc161441c03e2cb7d
Deposit or zone
La Morocha
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
700000
Grade
0.32
Grade Unit
g/t
Contained Metal
7
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
81
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Minor byproduct component.

Positive factors

  • Gold credit disclosed.

Negative factors

  • Very small Inferred inventory.

Evidence · table

“0.32”

Context: 0.7

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 6600000Grade: 128Grade Unit: g/tContained Metal: 27Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:e16e87f855a0f560d173
Deposit or zone
La Morocha
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
6600000
Grade
128
Grade Unit
g/t
Contained Metal
27
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
142
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Combined-category zone total retained as disclosed.

Positive factors

  • Mostly Indicated, comparatively stronger silver grade.

Negative factors

  • Printed tonnes differ from component sum; total overlaps components.

Evidence · table

“128”

Context: 6.6

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 6600000Grade: 0.16Grade Unit: g/tContained Metal: 34Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:e16e87f855a0f560d173
Deposit or zone
La Morocha
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
6600000
Grade
0.16
Grade Unit
g/t
Contained Metal
34
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
142
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Small zone-level byproduct total.

Positive factors

  • Gold credit in mostly Indicated zone.

Negative factors

  • Low grade; total overlaps components.

Evidence · table

“0.16”

Context: 6.6

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · silverTonnes: 2500000Grade: 70Grade Unit: g/tContained Metal: 5.6Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:6073b735e7837785e951
Deposit or zone
La Morocha SE
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
2500000
Grade
70
Grade Unit
g/t
Contained Metal
5.6
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
100
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: New discovery contribution with reasonable geological confidence.

Positive factors

  • Indicated discovery inventory.

Negative factors

  • Modest silver scale and grade.

Evidence · table

“70”

Context: 2.5

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · goldTonnes: 2500000Grade: 0.35Grade Unit: g/tContained Metal: 28Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:6073b735e7837785e951
Deposit or zone
La Morocha SE
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
2500000
Grade
0.35
Grade Unit
g/t
Contained Metal
28
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
100
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Supplementary metal in the discovery resource.

Positive factors

  • Indicated gold credit.

Negative factors

  • Small low-grade gold inventory.

Evidence · table

“0.35”

Context: 2.5

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 2700000Grade: 57Grade Unit: g/tContained Metal: 4.9Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:324ac37a27872e831efe
Deposit or zone
La Morocha SE
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
2700000
Grade
57
Grade Unit
g/t
Contained Metal
4.9
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
81
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Adds scale but needs infill drilling.

Positive factors

  • Additional discovery inventory.

Negative factors

  • Inferred and modest grade.

Evidence · table

“57”

Context: 2.7

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 2700000Grade: 0.28Grade Unit: g/tContained Metal: 24Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:324ac37a27872e831efe
Deposit or zone
La Morocha SE
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
2700000
Grade
0.28
Grade Unit
g/t
Contained Metal
24
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
81
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Minor supplementary inventory.

Positive factors

  • Gold credit disclosed.

Negative factors

  • Inferred and low grade.

Evidence · table

“0.28”

Context: 2.7

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 5200000Grade: 64Grade Unit: g/tContained Metal: 10Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:46ec80eea6db821eca0c
Deposit or zone
La Morocha SE
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
5200000
Grade
64
Grade Unit
g/t
Contained Metal
10
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
90
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Printed combined-category zone total.

Positive factors

  • Discovery adds meaningful zone scale.

Negative factors

  • Slight majority of tonnes Inferred; total overlaps components.

Evidence · table

“64”

Context: 5.2

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 5200000Grade: 0.32Grade Unit: g/tContained Metal: 52Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:46ec80eea6db821eca0c
Deposit or zone
La Morocha SE
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
5200000
Grade
0.32
Grade Unit
g/t
Contained Metal
52
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
90
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Zone gold total overlaps category components.

Positive factors

  • Gold credit contributes to equivalent grade.

Negative factors

  • Low grade and substantial Inferred portion.

Evidence · table

“0.32”

Context: 5.2

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 2400000Grade: 27Grade Unit: g/tContained Metal: 2.1Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:d7d6c1e0c3bc581c5d61
Deposit or zone
Breccia Puntudo
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
2400000
Grade
27
Grade Unit
g/t
Contained Metal
2.1
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
151
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Explicit total retained separately; it adds no inventory beyond the component.

Positive factors

  • Printed maiden zone total.

Negative factors

  • All Inferred; duplicates the zone's Inferred component.

Evidence · table

“27”

Context: 2.4

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 2400000Grade: 1.46Grade Unit: g/tContained Metal: 111Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:d7d6c1e0c3bc581c5d61
Deposit or zone
Breccia Puntudo
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
2400000
Grade
1.46
Grade Unit
g/t
Contained Metal
111
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
151
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Explicit total retained without double-counting its significance.

Positive factors

  • Printed gold-rich maiden zone total.

Negative factors

  • All Inferred; identical to component inventory.

Evidence · table

“1.46”

Context: 2.4

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · silverTonnes: 34400000Grade: 92Grade Unit: g/tContained Metal: 103Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:59003a7d7c9611fd3ae1
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
34400000
Grade
92
Grade Unit
g/t
Contained Metal
103
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
118
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Appendix A category total preserved as a distinct conflicting disclosure.

Positive factors

  • Large Indicated total.

Negative factors

  • Appendix A gives 34.4 Mt at 92 g/t versus Table 1's 34.5 Mt at 93 g/t.

Evidence · table

“92”

Context: 34.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · goldTonnes: 34400000Grade: 0.3Grade Unit: g/tContained Metal: 331Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:59003a7d7c9611fd3ae1
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
34400000
Grade
0.3
Grade Unit
g/t
Contained Metal
331
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
118
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Conflicting printed category total retained.

Positive factors

  • Indicated gold credit.

Negative factors

  • Appendix A gives 331 koz versus Table 1's 334 koz.

Evidence · table

“0.30”

Context: 34.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Fact 63Joaquin · silverTonnes: 31200000Grade: 71Grade Unit: g/tContained Metal: 71Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:d3011da5475a087bc047
Material type
oxide
Ownership percent
100 %

Resource Data

Tonnes
31200000
Grade
71
Grade Unit
g/t
Contained Metal
71
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
106
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Oxide-domain total retained without inventing its classification.

Positive factors

  • Large near-surface oxide silver inventory with conventional processing context.

Negative factors

  • Oxidation table does not disclose category split; overlaps global resource.

Evidence · table

“71”

Context: 31.2

Tags used in scoring

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Fact 64Joaquin · goldTonnes: 31200000Grade: 0.42Grade Unit: g/tContained Metal: 419Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:d3011da5475a087bc047
Material type
oxide
Ownership percent
100 %

Resource Data

Tonnes
31200000
Grade
0.42
Grade Unit
g/t
Contained Metal
419
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
106
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Material gold credit in the oxide domain.

Positive factors

  • Most disclosed Joaquin gold lies in oxide material.

Negative factors

  • Low standalone grade; category split undisclosed.

Evidence · table

“0.42”

Context: 31.2

Tags used in scoring

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Fact 65Joaquin · silverTonnes: 7500000Grade: 118Grade Unit: g/tContained Metal: 28Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:e2a595ffdebabf4074b7
Material type
mixed
Ownership percent
100 %

Resource Data

Tonnes
7500000
Grade
118
Grade Unit
g/t
Contained Metal
28
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
140
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Mixed-domain silver contributes meaningful scale.

Positive factors

  • Comparatively stronger silver grade; historical mixed-material leach support.

Negative factors

  • Category split undisclosed; recovery variability needs development work.

Evidence · table

“118”

Context: 7.5

Tags used in scoring

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Fact 66Joaquin · goldTonnes: 7500000Grade: 0.26Grade Unit: g/tContained Metal: 63Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:e2a595ffdebabf4074b7
Material type
mixed
Ownership percent
100 %

Resource Data

Tonnes
7500000
Grade
0.26
Grade Unit
g/t
Contained Metal
63
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
140
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Secondary metal contribution.

Positive factors

  • Disclosed mixed-domain gold credit.

Negative factors

  • Low grade; classification split not disclosed.

Evidence · table

“0.26”

Context: 7.5

Tags used in scoring

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Fact 67Joaquin · silverTonnes: 6500000Grade: 112Grade Unit: g/tContained Metal: 23Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:013c1c209f8c42ba80fb
Material type
fresh
Ownership percent
100 %

Resource Data

Tonnes
6500000
Grade
112
Grade Unit
g/t
Contained Metal
23
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
128
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Fresh-domain economics require domain-specific validation.

Positive factors

  • Meaningful fresh-domain silver inventory.

Negative factors

  • Category split undisclosed; narrative recovery support focuses on oxide and mixed material.

Evidence · table

“112”

Context: 6.5

Tags used in scoring

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Fact 68Joaquin · goldTonnes: 6500000Grade: 0.18Grade Unit: g/tContained Metal: 38Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:013c1c209f8c42ba80fb
Material type
fresh
Ownership percent
100 %

Resource Data

Tonnes
6500000
Grade
0.18
Grade Unit
g/t
Contained Metal
38
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
128
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Minor fresh-domain byproduct inventory.

Positive factors

  • Gold credit disclosed.

Negative factors

  • Very low grade; category split and fresh-domain recovery detail undisclosed.

Evidence · table

“0.18”

Context: 6.5

Tags used in scoring

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 45300000Grade: 85Grade Unit: g/tContained Metal: 123Contained Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:4c072b1b89b5255eefc6
Material type
mixed
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
45300000
Grade
85
Grade Unit
g/t
Contained Metal
123
Contained Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
115
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Appendix B aggregate spans oxide, mixed and fresh material; category follows the disclosed overall category mix.

Positive factors

  • Large total across oxidation domains.

Negative factors

  • Overlaps global total; component figures do not exactly sum to the printed total.

Evidence · table

“85”

Context: 45.3

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · goldTonnes: 45300000Grade: 0.36Grade Unit: g/tContained Metal: 521Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:4c072b1b89b5255eefc6
Material type
mixed
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
45300000
Grade
0.36
Grade Unit
g/t
Contained Metal
521
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
115
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Preserves the Appendix B gold total as printed.

Positive factors

  • Total gold credit across oxidation domains.

Negative factors

  • 521 koz differs from Table 1 and Appendix A's 522 koz; overlaps global totals.

Evidence · table

“0.36”

Context: 45.3

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedJoaquin · silverTonnes: 34.5Grade: 103Grade Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:d7e452efc170c78dd6f7
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
34.5
Grade
103
Grade Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
118
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: The principal higher-confidence component of the new Joaquin estimate. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Large Indicated silver inventory; disclosed cut-off and CP.

Negative factors

  • Economic viability not demonstrated.

Evidence · table

“103”

Context: 34.5

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

indicatedJoaquin · goldTonnes: 34.5Grade: 0.3Grade Unit: g/tContained Metal: 334Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:d7e452efc170c78dd6f7
Ownership percent
100 %

Resource Data

Category
indicated
Tonnes
34.5
Grade
0.3
Grade Unit
g/t
Contained Metal
334
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
118
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: The principal higher-confidence component of the new Joaquin estimate. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Large Indicated silver inventory; disclosed cut-off and CP.

Negative factors

  • Economic viability not demonstrated.

Evidence · table

“0.30”

Context: 34.5

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 10.8Grade: 20Grade Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:96ded1dbddc9bac27760
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
10.8
Grade
20
Grade Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
106
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Adds scale with lower geological confidence than the Indicated component. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver inventory.

Negative factors

  • Inferred classification requires further drilling.

Evidence · table

“20”

Context: 10.8

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

inferredJoaquin · goldTonnes: 10.8Grade: 0.55Grade Unit: g/tContained Metal: 190Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:96ded1dbddc9bac27760
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
10.8
Grade
0.55
Grade Unit
g/t
Contained Metal
190
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
106
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Adds scale with lower geological confidence than the Indicated component. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver inventory.

Negative factors

  • Inferred classification requires further drilling.

Evidence · table

“0.55”

Context: 10.8

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredJoaquin · silverTonnes: 45.3Grade: 123Grade Unit: mozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:f4bd6623b13a5d0b0ed4
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
45.3
Grade
123
Grade Unit
moz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
115
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Adds scale with lower geological confidence than the Indicated component. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver inventory.

Negative factors

  • Inferred classification requires further drilling.

Evidence · table

“123”

Context: 45.3

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

inferredJoaquin · goldTonnes: 45.3Grade: 0.36Grade Unit: g/tContained Metal: 522Contained Unit: kozView all details
Link to this fact

Identity

Project
Joaquin
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Rodrigo Peralta
Resource group id
resource:f4bd6623b13a5d0b0ed4
Ownership percent
100 %

Resource Data

Category
inferred
Tonnes
45.3
Grade
0.36
Grade Unit
g/t
Contained Metal
522
Contained Unit
koz
Cutoff Grade
40
Cutoff Unit
g/t AgEq

Metal Equivalent

Metal Eq. Grade
115
Metal Eq. Unit
g/t AgEq
Assumptions Disclosed
Yes

Lab

Laboratory
Alex Stewart International

Location

CRS
WGS84 / UTM Zone 19 South

Review

Needs Review
No
Historical
No

Reasoning: Adds scale with lower geological confidence than the Indicated component. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver inventory.

Negative factors

  • Inferred classification requires further drilling.

Evidence · table

“0.36”

Context: 45.3

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedCerro Leon · silverTonnes: 9.4Grade: 28.9Grade Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:0fd8c98ce2d146749daf

Resource Data

Category
indicated
Tonnes
9.4
Grade
28.9
Grade Unit
moz

Metal Equivalent

Metal Eq. Grade
190
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Existing Cerro Leon resource provides portfolio context. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Indicated silver inventory.

Negative factors

  • September 2025 restatement; global estimate cut-off and equivalent formula not disclosed for this scope.

Evidence · table

“28.9”

Context: 9.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

indicatedCerro Leon · goldTonnes: 9.4Grade: 0.54Grade Unit: g/tContained Metal: 165Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:0fd8c98ce2d146749daf

Resource Data

Category
indicated
Tonnes
9.4
Grade
0.54
Grade Unit
g/t
Contained Metal
165
Contained Unit
koz

Metal Equivalent

Metal Eq. Grade
190
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Existing Cerro Leon resource provides portfolio context. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Indicated silver inventory.

Negative factors

  • September 2025 restatement; global estimate cut-off and equivalent formula not disclosed for this scope.

Evidence · table

“0.54”

Context: 9.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

indicatedCerro Leon · leadTonnes: 9.4Grade: 119Grade Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
lead
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:0fd8c98ce2d146749daf

Resource Data

Category
indicated
Tonnes
9.4
Grade
119
Grade Unit
mlb

Metal Equivalent

Metal Eq. Grade
190
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Existing Cerro Leon resource provides portfolio context. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Indicated silver inventory.

Negative factors

  • September 2025 restatement; global estimate cut-off and equivalent formula not disclosed for this scope.

Evidence · table

“119”

Context: 9.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

indicatedCerro Leon · zincTonnes: 9.4Grade: 199Grade Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
zinc
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:0fd8c98ce2d146749daf

Resource Data

Category
indicated
Tonnes
9.4
Grade
199
Grade Unit
mlb

Metal Equivalent

Metal Eq. Grade
190
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Existing Cerro Leon resource provides portfolio context. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Indicated silver inventory.

Negative factors

  • September 2025 restatement; global estimate cut-off and equivalent formula not disclosed for this scope.

Evidence · table

“199”

Context: 9.4

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

inferredCerro Leon · silverTonnes: 21.6Grade: 33.1Grade Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:b803c38968aaf8493bed

Resource Data

Category
inferred
Tonnes
21.6
Grade
33.1
Grade Unit
moz

Metal Equivalent

Metal Eq. Grade
154
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Lower-confidence component dominates Cerro Leon global tonnes. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver scale.

Negative factors

  • Inferred, restated and lower grade; scope-specific cut-off not disclosed.

Evidence · table

“33.1”

Context: 21.6

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

inferredCerro Leon · goldTonnes: 21.6Grade: 0.55Grade Unit: g/tContained Metal: 398Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:b803c38968aaf8493bed

Resource Data

Category
inferred
Tonnes
21.6
Grade
0.55
Grade Unit
g/t
Contained Metal
398
Contained Unit
koz

Metal Equivalent

Metal Eq. Grade
154
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Lower-confidence component dominates Cerro Leon global tonnes. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver scale.

Negative factors

  • Inferred, restated and lower grade; scope-specific cut-off not disclosed.

Evidence · table

“0.55”

Context: 21.6

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · leadTonnes: 21.6Grade: 245Grade Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
lead
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:b803c38968aaf8493bed

Resource Data

Category
inferred
Tonnes
21.6
Grade
245
Grade Unit
mlb

Metal Equivalent

Metal Eq. Grade
154
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Lower-confidence component dominates Cerro Leon global tonnes. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver scale.

Negative factors

  • Inferred, restated and lower grade; scope-specific cut-off not disclosed.

Evidence · table

“245”

Context: 21.6

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

inferredCerro Leon · zincTonnes: 21.6Grade: 580Grade Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
zinc
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:b803c38968aaf8493bed

Resource Data

Category
inferred
Tonnes
21.6
Grade
580
Grade Unit
mlb

Metal Equivalent

Metal Eq. Grade
154
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Lower-confidence component dominates Cerro Leon global tonnes. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver scale.

Negative factors

  • Inferred, restated and lower grade; scope-specific cut-off not disclosed.

Evidence · table

“580”

Context: 21.6

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

inferredCerro Leon · silverTonnes: 31Grade: 62Grade Unit: mozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
silver
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:e4b782b88acc80d811a3

Resource Data

Category
inferred
Tonnes
31
Grade
62
Grade Unit
moz

Metal Equivalent

Metal Eq. Grade
161
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Lower-confidence component dominates Cerro Leon global tonnes. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver scale.

Negative factors

  • Inferred, restated and lower grade; scope-specific cut-off not disclosed.

Evidence · table

“62”

Context: 31

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

inferredCerro Leon · goldTonnes: 31Grade: 0.55Grade Unit: g/tContained Metal: 548Contained Unit: kozHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
gold
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:e4b782b88acc80d811a3

Resource Data

Category
inferred
Tonnes
31
Grade
0.55
Grade Unit
g/t
Contained Metal
548
Contained Unit
koz

Metal Equivalent

Metal Eq. Grade
161
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Lower-confidence component dominates Cerro Leon global tonnes. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver scale.

Negative factors

  • Inferred, restated and lower grade; scope-specific cut-off not disclosed.

Evidence · table

“0.55”

Context: 31

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

inferredCerro Leon · leadTonnes: 31Grade: 364Grade Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
lead
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:e4b782b88acc80d811a3

Resource Data

Category
inferred
Tonnes
31
Grade
364
Grade Unit
mlb

Metal Equivalent

Metal Eq. Grade
161
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Lower-confidence component dominates Cerro Leon global tonnes. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver scale.

Negative factors

  • Inferred, restated and lower grade; scope-specific cut-off not disclosed.

Evidence · table

“364”

Context: 31

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

inferredCerro Leon · zincTonnes: 31Grade: 778Grade Unit: mlbHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Project
Cerro Leon
Commodity
zinc
Region
argentina
Reported Region
Santa Cruz, Argentina
Ticker
USL

Resource scope

Estimate type
resource
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Ian Taylor
Resource group id
resource:e4b782b88acc80d811a3

Resource Data

Category
inferred
Tonnes
31
Grade
778
Grade Unit
mlb

Metal Equivalent

Metal Eq. Grade
161
Metal Eq. Unit
g/t AgEq

Review

Needs Review
Yes
Review Reason
historical_restatement
Historical
Yes

Reasoning: Lower-confidence component dominates Cerro Leon global tonnes. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • Additional silver scale.

Negative factors

  • Inferred, restated and lower grade; scope-specific cut-off not disclosed.

Evidence · table

“778”

Context: 31

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

How Atlas produces this analysis

Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.