# Mandalay Extends High-Grade True Blue Discovery and Deploys Additional Drill Rigs at Costerfield Gold-Antimony Mine

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3

Original source: https://money.tmx.com/en/quote/MND/news/7353531241463424/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig

Publisher: tmx

Original announcement: 2025-07-21T21:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Mandalay Resources Corporation

- Ticker: MND

- Exchange: TSX

- Region: Australia

- Primary commodity: Gold

- Secondary commodities: Antimony

- Document categories: Drill results

- Extracted: 2026-09-16 11:11:34 UTC

Narrative sentiment: 0.90 · Bullish

## Minestarters Atlas summary

Mandalay Resources announced significant high-grade gold and antimony drill results from its True Blue discovery at the Costerfield mine in Australia. Highlights include 155.0 g/t Au and 3.7% Sb over 0.30 m \(ETW 0.20 m\) in TB043, and the discovery of a new parallel high-grade vein. The company is deploying additional drill rigs to accelerate exploration and infill drilling, aiming to extend the mine's life and grow resources.

Reasoning: Mandalay Resources announced highly positive drill results from its True Blue discovery at the Costerfield mine, featuring bonanza gold and antimony grades, extension of mineralization, and the discovery of a new parallel high-grade vein. The company is accelerating its drill program, indicating strong confidence in the project's potential.

- Positive factor: High-grade gold and antimony intercepts, including bonanza grades, extend the True Blue discovery.

- Positive factor: Discovery of a new high-grade parallel vein 40 meters from the initial discovery adds significant potential.

- Positive factor: Drilling confirms structural and grade continuity, increasing confidence in the deposit.

- Positive factor: Deployment of additional drill rigs indicates an accelerated exploration and infill program.

- Positive factor: True width is estimated and disclosed for all significant intercepts.

Facts used in scoring: 54

## Classification and evidence

**Bonanza Intercept**

Polarity: positive

Definition: Exceptionally high-grade zone, well above the deposit-type norm.

Why it applies: The intercept in TB043 of 155.4 g/t Au and 3.7% Sb \(164.1 g/t AuEq\) significantly exceeds the exceptional threshold for underground gold deposits \(15 g/t Au\).

Evidence · table

> 155.4

Context: 516.83

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: The document explicitly states 'ESTIMATED TRUE WIDTH \(M\)' for all significant intercepts in Table 1, providing actual thickness perpendicular to the structure.

Evidence · table

> 0.23

Context: 594.86

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: The release details QA/QC procedures including systematic submission of standard reference materials and blanks, and mentions a certified laboratory \(OSLS\) and a Qualified Person \(Chris Davis\).

Evidence · text

> Site geological and metallurgical personnel have implemented a QA/QC procedure that includes systematic submission of standard reference materials and blanks within batches of drill and face samples submitted for assay.

**Step-Out Extension**

Polarity: positive

Definition: Mineralization extended beyond the previously known limit.

Why it applies: The drilling program includes 'extending the high-grade central area' and identified 'apparent offset extensions to the current mineral resource', indicating mineralization extended beyond previously known limits.

Evidence · text

> The first is aimed at extending the high-grade central area and defining its structural framework. Encouragingly, this program intersected a new parallel vein approximately 40 metres from the target and identified apparent offset extensions to the current mineral resource, highlighting additional growth potential while adding credibility to our initial exploration extent and formation hypothesis.

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: The release explicitly states 'infill drilling is building confidence in structure and grade continuity' within the upper portion of the high-grade core.

Evidence · text

> The second phase narrows focus to the upper portion of the high-grade core where infill drilling is building confidence in structure and grade continuity.

**Metal Equivalent Opaque**

Polarity: negative

Definition: Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used. Requires an actual metal equivalent grade; a combined elemental basket such as PGE is not a metal equivalent.

Why it applies: The metal equivalent calculation formula is provided, including prices and recoveries for gold and antimony, making the assumptions transparent.

Evidence · text

> AuEq g per t = Au g per t + Sb% × \(Sb price per 10kg × Sb processing recovery\) \(Au price per g × Au processing recovery\) Prices and recoveries used: Au $/oz = 2,500; Sb $/t = 19,000; Au Recovery = 91% and; Sb Recovery = 92%

## Extracted facts

Stored fact records: 54. Some facts used in scoring do not have a stored record.

## Drill Results (54)

### TB035

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-0)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB035
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 8.9
- Grade Unit: g/t
- Intercept: 0.29 m
- True Width: 0.23 m
- From: 594.86 m
- To: 595.15 m
- Hole Depth: 743 m
- Intercept Depth: 594.86 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB035:594.86-595.15
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916261
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 111 °
- Dip: -49 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 28.5
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a good gold grade over a narrow true width, contributing to the overall positive results from the True Blue discovery.

- Positive factor: High gold grade for narrow vein deposit.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Part of an ongoing exploration and infill program.

Evidence · table

> 8.9

Context: 594.86

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.23

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB035

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-1)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB035
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 8.2
- Grade Unit: %
- Intercept: 0.29 m
- True Width: 0.23 m
- From: 594.86 m
- To: 595.15 m
- Hole Depth: 743 m
- Intercept Depth: 594.86 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB035:594.86-595.15
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916261
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 111 °
- Dip: -49 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 28.5
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a good antimony grade over a narrow true width, contributing to the overall positive results from the True Blue discovery.

- Positive factor: High antimony grade, contributing significantly to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Part of an ongoing exploration and infill program.

Evidence · table

> 8.2

Context: 594.86

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.23

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB035W1

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-2)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB035W1
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.4
- Grade Unit: g/t
- Intercept: 1.14 m
- True Width: 0.76 m
- From: 542.5 m
- To: 543.64 m
- Hole Depth: 679 m
- Intercept Depth: 542.5 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB035W1:542.5-543.64
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916261
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 111 °
- Dip: -49 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.4
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Part of an ongoing exploration and infill program.

Evidence · table

> 0.4

Context: 542.50

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.76

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB035W1

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-3)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB035W1
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.4
- Grade Unit: %
- Intercept: 1.14 m
- True Width: 0.76 m
- From: 542.5 m
- To: 543.64 m
- Hole Depth: 679 m
- Intercept Depth: 542.5 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB035W1:542.5-543.64
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916261
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 111 °
- Dip: -49 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.4
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Part of an ongoing exploration and infill program.

Evidence · table

> 0.4

Context: 542.50

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.76

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB040

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-4)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB040
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.2
- Grade Unit: g/t
- Intercept: 0.87 m
- True Width: 0.65 m
- From: 599.73 m
- To: 600.6 m
- Hole Depth: 652 m
- Intercept Depth: 599.73 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB040:599.73-600.6
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916261
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 122 °
- Dip: -47 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 0.2
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Part of an ongoing exploration and infill program.

Evidence · table

> 0.2

Context: 599.73

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.65

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB040

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-5)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB040
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 0.87 m
- True Width: 0.65 m
- From: 599.73 m
- To: 600.6 m
- Hole Depth: 652 m
- Intercept Depth: 599.73 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB040:599.73-600.6
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916261
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 122 °
- Dip: -47 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 0.2
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Part of an ongoing exploration and infill program.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 599.73

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.65

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB043

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-6)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB043
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 155.4
- Grade Unit: g/t
- Intercept: 0.34 m
- True Width: 0.2 m
- From: 516.83 m
- To: 517.17 m
- Hole Depth: 580 m
- Intercept Depth: 516.83 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB043:516.83-517.17
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916491
- Northing: 300769
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 109 °
- Dip: -43 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 164.1
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept represents an exceptionally high-grade gold discovery, significantly enhancing the project's potential and confirming the presence of bonanza grades.

- Positive factor: Bonanza gold grade \(155.4 g/t Au\) significantly exceeds exceptional thresholds for underground gold.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(164.1 g/t AuEq\) indicates strong overall mineralization.

Evidence · table

> 155.4

Context: 516.83

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.2

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB043

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-7)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB043
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 3.7
- Grade Unit: %
- Intercept: 0.34 m
- True Width: 0.2 m
- From: 516.83 m
- To: 517.17 m
- Hole Depth: 580 m
- Intercept Depth: 516.83 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB043:516.83-517.17
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916491
- Northing: 300769
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 109 °
- Dip: -43 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 164.1
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a very high antimony grade, significantly enhancing the project's potential and contributing to the bonanza gold equivalent grade.

- Positive factor: High antimony grade, contributing significantly to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(164.1 g/t AuEq\) indicates strong overall mineralization.

Evidence · table

> 3.7

Context: 516.83

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.2

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB044

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-8)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB044
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 19.9
- Grade Unit: g/t
- Intercept: 3.1 m
- True Width: 2.37 m
- From: 544.54 m
- To: 547.64 m
- Hole Depth: 590 m
- Intercept Depth: 544.54 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB044:544.54-547.64
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916262
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 107 °
- Dip: -47 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 24.5
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept demonstrates strong gold mineralization over a good width, contributing positively to the resource potential and continuity.

- Positive factor: Strong gold grade \(19.9 g/t Au\) over a significant true width \(2.37 m\) for an underground operation.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(24.5 g/t AuEq\) indicates strong overall mineralization.

Evidence · table

> 19.9

Context: 544.54

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 2.37

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB044

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-9)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB044
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 2
- Grade Unit: %
- Intercept: 3.1 m
- True Width: 2.37 m
- From: 544.54 m
- To: 547.64 m
- Hole Depth: 590 m
- Intercept Depth: 544.54 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB044:544.54-547.64
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916262
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 107 °
- Dip: -47 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 24.5
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept demonstrates strong antimony mineralization over a good width, contributing positively to the resource potential and continuity.

- Positive factor: Strong antimony grade over a significant true width, contributing to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(24.5 g/t AuEq\) indicates strong overall mineralization.

Evidence · table

> 2.0

Context: 544.54

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 2.37

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB045

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-10)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB045
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 21.8
- Grade Unit: g/t
- Intercept: 0.25 m
- True Width: 0.22 m
- From: 531.84 m
- To: 532.09 m
- Hole Depth: 580 m
- Intercept Depth: 531.84 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB045:531.84-532.09
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916263
- Northing: 301488
- CRS: MGA2020
- Elevation: 216 m
- Azimuth: 267 °
- Dip: -44 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 54.7
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a strong gold grade over a narrow true width, contributing positively to the resource potential.

- Positive factor: Strong gold grade \(21.8 g/t Au\) for an underground operation.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(54.7 g/t AuEq\) indicates strong overall mineralization.

Evidence · table

> 21.8

Context: 531.84

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.22

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB045

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-11)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB045
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 13.8
- Grade Unit: %
- Intercept: 0.25 m
- True Width: 0.22 m
- From: 531.84 m
- To: 532.09 m
- Hole Depth: 580 m
- Intercept Depth: 531.84 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB045:531.84-532.09
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916263
- Northing: 301488
- CRS: MGA2020
- Elevation: 216 m
- Azimuth: 267 °
- Dip: -44 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 54.7
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an exceptional antimony grade over a narrow true width, significantly enhancing the project's potential.

- Positive factor: Exceptional antimony grade \(13.8%\) contributing significantly to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(54.7 g/t AuEq\) indicates strong overall mineralization.

Evidence · table

> 13.8

Context: 531.84

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.22

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB046

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-12)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB046
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 3.3
- Grade Unit: g/t
- Intercept: 0.12 m
- True Width: 0.12 m
- From: 496.29 m
- To: 496.41 m
- Hole Depth: 569 m
- Intercept Depth: 496.29 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB046:496.29-496.41
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916262
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 106 °
- Dip: -43 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 14.4
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a moderate gold grade over a very narrow true width, contributing to the overall mineralization picture.

- Positive factor: Moderate gold grade for narrow vein deposit.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(14.4 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 3.3

Context: 496.29

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.12

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB046

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-13)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB046
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 4.7
- Grade Unit: %
- Intercept: 0.12 m
- True Width: 0.12 m
- From: 496.29 m
- To: 496.41 m
- Hole Depth: 569 m
- Intercept Depth: 496.29 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB046:496.29-496.41
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916262
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 106 °
- Dip: -43 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 14.4
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a strong antimony grade over a very narrow true width, contributing to the overall mineralization picture.

- Positive factor: Strong antimony grade \(4.7%\) contributing significantly to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(14.4 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 4.7

Context: 496.29

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.12

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB049

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-14)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB049
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 2.6
- Grade Unit: g/t
- Intercept: 1.62 m
- True Width: 1.17 m
- From: 518.86 m
- To: 520.48 m
- Hole Depth: 600 m
- Intercept Depth: 518.86 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB049:518.86-520.48
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916263
- Northing: 301488
- CRS: MGA2020
- Elevation: 216 m
- Azimuth: 277 °
- Dip: -42 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 6.5
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a moderate gold grade over a good true width, contributing to the overall mineralization picture.

- Positive factor: Moderate gold grade over a good true width.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(6.5 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 2.6

Context: 518.86

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.17

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB049

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-15)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB049
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.6
- Grade Unit: %
- Intercept: 1.62 m
- True Width: 1.17 m
- From: 518.86 m
- To: 520.48 m
- Hole Depth: 600 m
- Intercept Depth: 518.86 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB049:518.86-520.48
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916263
- Northing: 301488
- CRS: MGA2020
- Elevation: 216 m
- Azimuth: 277 °
- Dip: -42 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 6.5
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a moderate antimony grade over a good true width, contributing to the overall mineralization picture.

- Positive factor: Moderate antimony grade contributing to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(6.5 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 1.6

Context: 518.86

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.17

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB052

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-16)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB052
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 5.4
- Grade Unit: g/t
- Intercept: 1.64 m
- True Width: 1.55 m
- From: 548.8 m
- To: 550.44 m
- Hole Depth: 590 m
- Intercept Depth: 548.8 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB052:548.8-550.44
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916491
- Northing: 300768
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 116 °
- Dip: -46 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 11.2
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a strong gold grade over a good true width, contributing positively to the resource potential.

- Positive factor: Strong gold grade \(5.4 g/t Au\) over a good true width \(1.55 m\) for an underground operation.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(11.2 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 5.4

Context: 548.80

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.55

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB052

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-17)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB052
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 2.4
- Grade Unit: %
- Intercept: 1.64 m
- True Width: 1.55 m
- From: 548.8 m
- To: 550.44 m
- Hole Depth: 590 m
- Intercept Depth: 548.8 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB052:548.8-550.44
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916491
- Northing: 300768
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 116 °
- Dip: -46 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 11.2
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a strong antimony grade over a good true width, contributing positively to the resource potential.

- Positive factor: Strong antimony grade \(2.4%\) contributing significantly to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(11.2 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 2.4

Context: 548.80

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.55

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB053

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-18)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB053
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 16
- Grade Unit: g/t
- Intercept: 3.57 m
- True Width: 1.51 m
- From: 529.43 m
- To: 533 m
- Hole Depth: 576 m
- Intercept Depth: 529.43 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB053:529.43-533
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916263
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 101 °
- Dip: -47 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 19.7
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept demonstrates strong gold mineralization over a good width, contributing positively to the resource potential and continuity.

- Positive factor: Strong gold grade \(16.0 g/t Au\) over a good true width \(1.51 m\) for an underground operation.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(19.7 g/t AuEq\) indicates strong overall mineralization.

Evidence · table

> 16.0

Context: 529.43

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.51

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB053

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-19)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB053
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.5
- Grade Unit: %
- Intercept: 3.57 m
- True Width: 1.51 m
- From: 529.43 m
- To: 533 m
- Hole Depth: 576 m
- Intercept Depth: 529.43 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB053:529.43-533
- Mining Method: underground

#### Location

- Location: Main
- Easting: 5916263
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 101 °
- Dip: -47 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 19.7
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept demonstrates strong antimony mineralization over a good width, contributing positively to the resource potential and continuity.

- Positive factor: Strong antimony grade \(1.5%\) contributing significantly to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(19.7 g/t AuEq\) indicates strong overall mineralization.

Evidence · table

> 1.5

Context: 529.43

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.51

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB017

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-20)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB017
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 10.7
- Grade Unit: g/t
- Intercept: 0.22 m
- True Width: 0.17 m
- From: 417.87 m
- To: 418.09 m
- Intercept Depth: 417.87 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB017:417.87-418.09
- Mining Method: underground

#### Location

- Location: Associated
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 23
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a high gold grade over a narrow true width, contributing to the overall mineralization picture.

- Positive factor: High gold grade \(10.7 g/t Au\) for narrow vein deposit.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(23.0 g/t AuEq\) indicates strong overall mineralization.

Evidence · table

> 10.7

Context: 417.87

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.17

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB017

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-21)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB017
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 5.2
- Grade Unit: %
- Intercept: 0.22 m
- True Width: 0.17 m
- From: 417.87 m
- To: 418.09 m
- Intercept Depth: 417.87 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB017:417.87-418.09
- Mining Method: underground

#### Location

- Location: Associated
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 23
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a strong antimony grade over a narrow true width, contributing to the overall mineralization picture.

- Positive factor: Strong antimony grade \(5.2%\) contributing significantly to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(23.0 g/t AuEq\) indicates strong overall mineralization.

Evidence · table

> 5.2

Context: 417.87

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.17

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB026

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-22)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB026
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.5
- Grade Unit: g/t
- Intercept: 0.45 m
- True Width: 0.41 m
- From: 730.65 m
- To: 731.1 m
- Intercept Depth: 730.65 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB026:730.65-731.1
- Mining Method: underground

#### Location

- Location: Associated
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 6.6
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but the antimony contribution results in a moderate gold equivalent grade, adding to the overall mineralization picture.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(6.6 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 0.5

Context: 730.65

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.41

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB026

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-23)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB026
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 2.6
- Grade Unit: %
- Intercept: 0.45 m
- True Width: 0.41 m
- From: 730.65 m
- To: 731.1 m
- Intercept Depth: 730.65 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB026:730.65-731.1
- Mining Method: underground

#### Location

- Location: Associated
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 6.6
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a strong antimony grade over a narrow true width, contributing to the overall mineralization picture.

- Positive factor: Strong antimony grade \(2.6%\) contributing significantly to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(6.6 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 2.6

Context: 730.65

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.41

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB026

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-24)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB026
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.6
- Grade Unit: g/t
- Intercept: 1.16 m
- True Width: 0.82 m
- From: 716.56 m
- To: 717.72 m
- Intercept Depth: 716.56 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB026:716.56-717.72
- Mining Method: underground

#### Location

- Location: Associated
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 5.7
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but the antimony contribution results in a moderate gold equivalent grade, adding to the overall mineralization picture.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(5.7 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 1.6

Context: 716.56

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.82

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB026

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-25)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB026
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.7
- Grade Unit: %
- Intercept: 1.16 m
- True Width: 0.82 m
- From: 716.56 m
- To: 717.72 m
- Intercept Depth: 716.56 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB026:716.56-717.72
- Mining Method: underground

#### Location

- Location: Associated
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 5.7
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a moderate antimony grade over a narrow true width, contributing to the overall mineralization picture.

- Positive factor: Moderate antimony grade contributing to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(5.7 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 1.7

Context: 716.56

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.82

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB029

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-26)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB029
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 4.7
- Grade Unit: g/t
- Intercept: 1.53 m
- True Width: 1.39 m
- From: 776.42 m
- To: 777.95 m
- Intercept Depth: 776.42 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB029:776.42-777.95
- Mining Method: underground

#### Location

- Location: Associated
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 5.4
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a strong gold grade over a good true width, contributing positively to the resource potential.

- Positive factor: Strong gold grade \(4.7 g/t Au\) over a good true width \(1.39 m\) for an underground operation.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Moderate gold equivalent grade \(5.4 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 4.7

Context: 776.42

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.39

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB029

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-27)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB029
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.3
- Grade Unit: %
- Intercept: 1.53 m
- True Width: 1.39 m
- From: 776.42 m
- To: 777.95 m
- Intercept Depth: 776.42 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB029:776.42-777.95
- Mining Method: underground

#### Location

- Location: Associated
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 5.4
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a moderate antimony grade over a good true width, contributing to the overall mineralization picture.

- Positive factor: Moderate antimony grade contributing to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Moderate gold equivalent grade \(5.4 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 0.3

Context: 776.42

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.39

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB029

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-28)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB029
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 3.2
- Grade Unit: g/t
- Intercept: 1.13 m
- True Width: 0.56 m
- From: 781.3 m
- To: 782.43 m
- Intercept Depth: 781.3 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB029:781.3-782.43
- Mining Method: underground

#### Location

- Location: Associated
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 3.2
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a moderate gold grade over a good true width, contributing positively to the resource potential, despite undetectable antimony.

- Positive factor: Moderate gold grade \(3.2 g/t Au\) over a good true width \(0.56 m\) for an underground operation.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in no antimony contribution to AuEq.

Evidence · table

> 3.2

Context: 781.30

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.56

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB029

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-29)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB029
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 1.13 m
- True Width: 0.56 m
- From: 781.3 m
- To: 782.43 m
- Intercept Depth: 781.3 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB029:781.3-782.43
- Mining Method: underground

#### Location

- Location: Associated
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 3.2
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 781.30

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.56

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB032

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-30)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB032
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.7
- Grade Unit: g/t
- Intercept: 0.43 m
- True Width: 0.31 m
- From: 575.43 m
- To: 575.86 m
- Hole Depth: 601 m
- Intercept Depth: 575.43 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB032:575.43-575.86
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916491
- Northing: 300769
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 113 °
- Dip: -36 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.7
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area, despite undetectable antimony.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in no antimony contribution to AuEq.

Evidence · table

> 1.7

Context: 575.43

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.31

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB032

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-31)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB032
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 0.43 m
- True Width: 0.31 m
- From: 575.43 m
- To: 575.86 m
- Hole Depth: 601 m
- Intercept Depth: 575.43 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB032:575.43-575.86
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916491
- Northing: 300769
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 113 °
- Dip: -36 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.7
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 575.43

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.31

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB033

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-32)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB033
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.5
- Grade Unit: g/t
- Intercept: 0.64 m
- True Width: 0.6 m
- From: 522.2 m
- To: 522.84 m
- Hole Depth: 539 m
- Intercept Depth: 522.2 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB033:522.2-522.84
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916262
- Northing: 300735
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 108 °
- Dip: -40 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 0.5
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area, despite undetectable antimony.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in no antimony contribution to AuEq.

Evidence · table

> 0.5

Context: 522.20

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.6

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB033

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-33)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB033
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 0.64 m
- True Width: 0.6 m
- From: 522.2 m
- To: 522.84 m
- Hole Depth: 539 m
- Intercept Depth: 522.2 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB033:522.2-522.84
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916262
- Northing: 300735
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 108 °
- Dip: -40 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 0.5
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 522.20

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.6

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB033

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-34)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB033
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.8
- Grade Unit: g/t
- Intercept: 0.69 m
- True Width: 0.57 m
- From: 528.56 m
- To: 529.25 m
- Hole Depth: 539 m
- Intercept Depth: 528.56 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB033:528.56-529.25
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916262
- Northing: 300735
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 108 °
- Dip: -40 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 0.8
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area, despite undetectable antimony.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in no antimony contribution to AuEq.

Evidence · table

> 0.8

Context: 528.56

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.57

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB033

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-35)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB033
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 0.69 m
- True Width: 0.57 m
- From: 528.56 m
- To: 529.25 m
- Hole Depth: 539 m
- Intercept Depth: 528.56 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB033:528.56-529.25
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916262
- Northing: 300735
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 108 °
- Dip: -40 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 0.8
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 528.56

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.57

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB034A

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-36)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB034A
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 11.7
- Grade Unit: g/t
- Intercept: 4.88 m
- True Width: 2.06 m
- From: 549.36 m
- To: 554.24 m
- Hole Depth: 648 m
- Intercept Depth: 549.36 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB034A:549.36-554.24
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916491
- Northing: 300769
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 103 °
- Dip: -41 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 27.2
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept represents a significant discovery of a new high-grade parallel vein, with strong gold and antimony grades over a good true width, adding substantial potential to the project.

- Positive factor: Strong gold grade \(11.7 g/t Au\) over a significant true width \(2.06 m\) for an underground operation.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(27.2 g/t AuEq\) indicates strong overall mineralization.

- Positive factor: This intercept is from a newly discovered high-grade parallel vein, indicating significant exploration upside.

Evidence · table

> 11.7

Context: 549.36

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 2.06

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB034A

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-37)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB034A
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 6.5
- Grade Unit: %
- Intercept: 4.88 m
- True Width: 2.06 m
- From: 549.36 m
- To: 554.24 m
- Hole Depth: 648 m
- Intercept Depth: 549.36 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB034A:549.36-554.24
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916491
- Northing: 300769
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 103 °
- Dip: -41 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 27.2
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept represents a significant discovery of a new high-grade parallel vein, with exceptional antimony grades over a good true width, adding substantial potential to the project.

- Positive factor: Exceptional antimony grade \(6.5%\) over a significant true width, contributing significantly to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: High gold equivalent grade \(27.2 g/t AuEq\) indicates strong overall mineralization.

- Positive factor: This intercept is from a newly discovered high-grade parallel vein, indicating significant exploration upside.

Evidence · table

> 6.5

Context: 549.36

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 2.06

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB035W1

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-38)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB035W1
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 3.5
- Grade Unit: g/t
- Intercept: 3.51 m
- True Width: 1.03 m
- From: 549.49 m
- To: 553 m
- Hole Depth: 679 m
- Intercept Depth: 549.49 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB035W1:549.49-553
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916261
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 111 °
- Dip: -49 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 3.6
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a moderate gold grade over a good true width, contributing positively to the resource potential, despite undetectable antimony.

- Positive factor: Moderate gold grade \(3.5 g/t Au\) over a good true width \(1.03 m\) for an underground operation.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in minimal antimony contribution to AuEq.

Evidence · table

> 3.5

Context: 549.49

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.03

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB035W1

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-39)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB035W1
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 3.51 m
- True Width: 1.03 m
- From: 549.49 m
- To: 553 m
- Hole Depth: 679 m
- Intercept Depth: 549.49 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB035W1:549.49-553
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916261
- Northing: 300734
- CRS: MGA2020
- Elevation: 227 m
- Azimuth: 111 °
- Dip: -49 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 3.6
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 549.49

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.03

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB037

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-40)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB037
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.8
- Grade Unit: g/t
- Intercept: 2.3 m
- True Width: 1.01 m
- From: 693.21 m
- To: 695.51 m
- Hole Depth: 726 m
- Intercept Depth: 693.21 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB037:693.21-695.51
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916492
- Northing: 300770
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 95 °
- Dip: -39 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.8
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area, despite undetectable antimony.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in no antimony contribution to AuEq.

Evidence · table

> 1.8

Context: 693.21

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.01

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB037

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-41)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB037
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 2.3 m
- True Width: 1.01 m
- From: 693.21 m
- To: 695.51 m
- Hole Depth: 726 m
- Intercept Depth: 693.21 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB037:693.21-695.51
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916492
- Northing: 300770
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 95 °
- Dip: -39 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.8
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 693.21

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 1.01

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB037

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-42)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB037
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.3
- Grade Unit: g/t
- Intercept: 1.29 m
- True Width: 0.65 m
- From: 701.16 m
- To: 702.45 m
- Hole Depth: 726 m
- Intercept Depth: 701.16 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB037:701.16-702.45
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916492
- Northing: 300770
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 95 °
- Dip: -39 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.3
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area, despite undetectable antimony.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in no antimony contribution to AuEq.

Evidence · table

> 1.3

Context: 701.16

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.65

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB037

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-43)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB037
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 1.29 m
- True Width: 0.65 m
- From: 701.16 m
- To: 702.45 m
- Hole Depth: 726 m
- Intercept Depth: 701.16 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB037:701.16-702.45
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916492
- Northing: 300770
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 95 °
- Dip: -39 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.3
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 701.16

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.65

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB038

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-44)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB038
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.8
- Grade Unit: g/t
- Intercept: 0.18 m
- True Width: 0.16 m
- From: 50 m
- To: 50.18 m
- Hole Depth: 353 m
- Intercept Depth: 50 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB038:50-50.18
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916387
- Northing: 301322
- CRS: MGA2020
- Elevation: 220 m
- Azimuth: 267 °
- Dip: -45 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.8
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area, despite undetectable antimony.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in no antimony contribution to AuEq.

Evidence · table

> 1.8

Context: 50.00

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.16

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB038

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-45)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB038
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 0.18 m
- True Width: 0.16 m
- From: 50 m
- To: 50.18 m
- Hole Depth: 353 m
- Intercept Depth: 50 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB038:50-50.18
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916387
- Northing: 301322
- CRS: MGA2020
- Elevation: 220 m
- Azimuth: 267 °
- Dip: -45 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.8
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 50.00

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.16

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB038

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-46)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB038
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.7
- Grade Unit: g/t
- Intercept: 0.25 m
- True Width: 0.21 m
- From: 61.37 m
- To: 61.62 m
- Hole Depth: 353 m
- Intercept Depth: 61.37 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB038:61.37-61.62
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916387
- Northing: 301322
- CRS: MGA2020
- Elevation: 220 m
- Azimuth: 267 °
- Dip: -45 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 0.7
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area, despite undetectable antimony.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in no antimony contribution to AuEq.

Evidence · table

> 0.7

Context: 61.37

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.21

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB038

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-47)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB038
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 0.25 m
- True Width: 0.21 m
- From: 61.37 m
- To: 61.62 m
- Hole Depth: 353 m
- Intercept Depth: 61.37 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB038:61.37-61.62
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916387
- Northing: 301322
- CRS: MGA2020
- Elevation: 220 m
- Azimuth: 267 °
- Dip: -45 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 0.7
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 61.37

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.21

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB038

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-48)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB038
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.3
- Grade Unit: g/t
- Intercept: 0.21 m
- True Width: 0.19 m
- From: 77.64 m
- To: 77.85 m
- Hole Depth: 353 m
- Intercept Depth: 77.64 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB038:77.64-77.85
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916387
- Northing: 301322
- CRS: MGA2020
- Elevation: 220 m
- Azimuth: 267 °
- Dip: -45 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.3
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area, despite undetectable antimony.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in no antimony contribution to AuEq.

Evidence · table

> 1.3

Context: 77.64

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.19

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB038

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-49)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB038
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 0.21 m
- True Width: 0.19 m
- From: 77.64 m
- To: 77.85 m
- Hole Depth: 353 m
- Intercept Depth: 77.64 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB038:77.64-77.85
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916387
- Northing: 301322
- CRS: MGA2020
- Elevation: 220 m
- Azimuth: 267 °
- Dip: -45 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.3
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 77.64

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.19

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB038

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-50)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB038
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.4
- Grade Unit: g/t
- Intercept: 0.11 m
- True Width: 0.09 m
- From: 97.07 m
- To: 97.18 m
- Hole Depth: 353 m
- Intercept Depth: 97.07 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB038:97.07-97.18
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916387
- Northing: 301322
- CRS: MGA2020
- Elevation: 220 m
- Azimuth: 267 °
- Dip: -45 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.4
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a low gold grade, but contributes to the overall understanding of the mineralization in the area, despite undetectable antimony.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\), resulting in no antimony contribution to AuEq.

Evidence · table

> 1.4

Context: 97.07

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.09

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB038

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-51)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB038
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 0.01
- Grade Unit: %
- Intercept: 0.11 m
- True Width: 0.09 m
- From: 97.07 m
- To: 97.18 m
- Hole Depth: 353 m
- Intercept Depth: 97.07 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB038:97.07-97.18
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916387
- Northing: 301322
- CRS: MGA2020
- Elevation: 220 m
- Azimuth: 267 °
- Dip: -45 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 1.4
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows an undetectable antimony grade, but contributes to the overall understanding of the mineralization in the area.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Negative factor: Antimony grade is below detection limit \(LLD\).

Evidence · table

> LLD

Context: 97.07

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 0.09

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB052

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-52)

Costerfield Gold-Antimony Mine · gold

#### Identity

- Hole ID: TB052
- Project: Costerfield Gold-Antimony Mine
- Commodity: gold
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 2.7
- Grade Unit: g/t
- Intercept: 4.44 m
- True Width: 3.72 m
- From: 535.57 m
- To: 540.01 m
- Hole Depth: 590 m
- Intercept Depth: 535.57 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB052:535.57-540.01
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916491
- Northing: 300768
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 116 °
- Dip: -46 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 6.8
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a moderate gold grade over a significant true width, contributing positively to the resource potential.

- Positive factor: Moderate gold grade over a significant true width \(3.72 m\) for an underground operation.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(6.8 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 2.7

Context: 535.57

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 3.72

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

### TB052

[Link to this fact](https://atlas-extractions.minestarters.com/news/mandalay-extends-high-grade-true-blue-discovery-and-deploys-additional-drill-rig--d15ae8a7-9e30-415d-bb4b-1837404bbed3#fact-drill-facts-53)

Costerfield Gold-Antimony Mine · antimony

#### Identity

- Hole ID: TB052
- Project: Costerfield Gold-Antimony Mine
- Commodity: antimony
- Region: australia
- Reported Region: australia
- Ticker: MND

#### Geometry

- Grade: 1.7
- Grade Unit: %
- Intercept: 4.44 m
- True Width: 3.72 m
- From: 535.57 m
- To: 540.01 m
- Hole Depth: 590 m
- Intercept Depth: 535.57 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: TB052:535.57-540.01
- Mining Method: underground

#### Location

- Location: Associated
- Easting: 5916491
- Northing: 300768
- CRS: MGA2020
- Elevation: 237 m
- Azimuth: 116 °
- Dip: -46 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: On Site Laboratory Services \(OSLS\)
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Metal Equivalent

- Metal Eq. Grade: 6.8
- Metal Eq. Unit: g/t AuEq
- Assumptions Disclosed: Yes

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2025-07-21T00:00:00.000Z

Reasoning: This intercept shows a moderate antimony grade over a significant true width, contributing positively to the resource potential.

- Positive factor: Moderate antimony grade contributing to the gold equivalent value.

- Positive factor: True width disclosed, adding confidence to the intercept geometry.

- Positive factor: Good gold equivalent grade \(6.8 g/t AuEq\) indicates significant overall mineralization.

Evidence · table

> 1.7

Context: 535.57

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: true\_width\_m is 3.72

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: qaqc\_disclosed is true

**Cut-off Undisclosed**

Polarity: negative

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

Why it applies: no cutoff\_grade was stated

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: drill\_program\_type is "mixed"

**Nearology Play**

Polarity: neutral

Definition: Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Highlights include: 155.0g/t Au and 3.7% Sb or 164 g/t AuEq over 0.30 m \(ETW 0.20m\) in TB043; 19.9g/t Au and 2.1% Sb or "

## 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.