Blossom Gold Reports Initial Metallurgical Results and Engagement of Metallurgical Advisor for the Rosebud Open-Pit, Heap-Leach Project

Original announcement by globenewswire on

Company
Blossom Gold Inc.
Ticker
BGAU
Exchange
Unavailable
Region
Pershing County, Nevada
Primary commodity
Gold
Secondary commodities
Silver
Document categories
Metallurgy
Extracted
2026-09-12 01:47:54 UTC

Analysis by Minestarters Atlas

Minestarters Atlas analysis

Summary

Blossom Gold announced initial bottle roll metallurgical test results for its Rosebud Open-Pit, Heap-Leach Project in Nevada, showing average gold recoveries of 73% and silver recoveries of 63% for oxidized material at a 25mm crush. Fresh rock material, however, yielded lower average recoveries of 36% for gold and 40% for silver, with further tests indicating that roasting significantly improved recovery for sulfidic samples. The company also engaged a metallurgical advisor to guide ongoing test work aimed at defining recovery characteristics for mine planning and feasibility studies.

Reasoning: Initial bottle roll tests for the Rosebud project show promising gold and silver recoveries for oxide material, supporting a heap leach approach. However, fresh rock material exhibits low recoveries due to sulfide characteristics, necessitating further test work and potentially more complex processing routes like roasting, which introduces uncertainty for that ore type.

Positive factors

  • Good gold and silver recoveries for oxide material (73% Au, 63% Ag at 25mm crush) are promising for a heap leach operation.
  • Silver recoveries were better than expected across all samples.
  • Tests confirmed non-preg-robbing material and low levels of mercury and copper, eliminating common metallurgical issues.
  • Engagement of an experienced metallurgical advisor (Jim Wickens) strengthens the program.

Negative factors

  • Fresh rock material shows significantly lower gold and silver recoveries (36% Au, 40% Ag at 25mm crush), indicating metallurgical challenges with sulfides.
  • Roasting was required to achieve high recoveries in some fresh rock samples, suggesting potential processing complexity and higher costs for this material.
  • The current results are from preliminary bottle roll tests, which are not as definitive as pilot-scale or locked-cycle tests.

Low confidence — this extraction should be reviewed alongside the original source.

Facts used in scoring: 52

Classification and evidence

Heap Leach Routeneutral

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

Why it applies: The project is explicitly named 'Rosebud Open-Pit, Heap-Leach Project' and the test work is aimed at defining recovery characteristics for this route.

Evidence · text

“Rosebud Open-Pit Heap-Leach Project”

Bench Scale Onlynegative

Only preliminary bench tests completed — no locked-cycle or pilot work.

Why it applies: The document reports 'initial bottle roll test results' and 'cyanide shake tests', which are bench-scale tests, with column leach tests planned for the future.

Evidence · text

“initial bottle roll test results”

Multi-Domain Testedpositive

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

Why it applies: The tests were conducted on 'multiple host rock types and alteration styles from both oxidized and fresh rock' and 'five intervals in three metallurgical drill holes'.

Evidence · text

“multiple host rock types and alteration styles from both oxidized and fresh rock”

Refractory Orenegative

Ore requires oxidation/pressure treatment before recovery — a processing and recovery risk.

Why it applies: Fresh rock material showed poor recoveries, and 'Roasting the BG26-008 material resulted in over 100% estimated recovery, indicating some characteristic of the sulfides in that material is slowing or preventing leaching of precious metals'.

Evidence · text

“Roasting the BG26-008 material resulted in over 100% estimated recovery, indicating some characteristic of the sulfides in that material is slowing or preventing leaching of precious metals”

Free Millingpositive

Simple, clean ore amenable to standard processing without oxidation.

Why it applies: Standard preg-robbing shake tests demonstrated non preg-robbing material in all samples, consistent with the lack of carbonate rocks in drill core and nil organic carbon in all samples.

Evidence · text

“Standard preg-robbing shake tests demonstrated non preg-robbing material in all samples, consistent with the lack of carbonate rocks in drill core and nil organic carbon in all samples.”

Deleterious Elements Presentnegative · Story-specific tag

A source-stated penalty, refractory or recovery concern in the fact's scope. Element detection alone, including measured elements explicitly below penalty thresholds, does not trigger this tag. Respect negation and retain a separately stated concern even when another risk is explicitly absent.

Why it applies: Analysis demonstrated low levels of mercury and copper, which in concentration can negatively impact leach efficiency, though they were not problematic in these samples.

Evidence · text

“Analysis also demonstrated low levels of mercury and copper, which in concentration can negatively impact leach efficiency.”

Mill Routeneutral

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

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

POX/BIOX Routeneutral

Pressure or bio-oxidation for refractory ore — high CAPEX and OPEX.

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

Extracted facts

Stored fact records: 52. Some facts used in scoring do not have a stored record.

Metallurgical Results (52)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 48 %Head Grade: 1.743Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-002 dacite lapilli tuff 130' - 180' fresh
Grind P80
50000 µm
Leach Time
336 hours

Recovery

Recovery
48 %
Recovery Basis
actual_test
Head Grade
1.743
Head Grade Unit
g/t
Tailings Grade
0.913
Tailings Grade Unit
g/t

Reagents

Cyanide
0.06 kg/t
Lime
1 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak gold recovery at a coarse grind, indicating challenges for heap leaching this material.

Negative factors

  • Recovery is weak for gold in fresh rock at this grind size for a heap leach scenario.

Evidence · table

“48 %”

Context: 1.743

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 31 %Head Grade: 8.07Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-002 dacite lapilli tuff 130' - 180' fresh
Grind P80
50000 µm
Leach Time
336 hours

Recovery

Recovery
31 %
Recovery Basis
actual_test
Head Grade
8.07
Head Grade Unit
g/t
Tailings Grade
5.55
Tailings Grade Unit
g/t

Reagents

Cyanide
0.06 kg/t
Lime
1 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak silver recovery at a coarse grind, indicating challenges for heap leaching this material.

Negative factors

  • Recovery is weak for silver in fresh rock at this grind size for a heap leach scenario.

Evidence · table

“31 %”

Context: 8.07

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 31% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 58 %Head Grade: 0.764Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-002 dacite lapilli tuff 130' - 180' fresh
Grind P80
25000 µm
Leach Time
336 hours

Recovery

Recovery
58 %
Recovery Basis
actual_test
Head Grade
0.764
Head Grade Unit
g/t
Tailings Grade
0.324
Tailings Grade Unit
g/t

Reagents

Cyanide
0.12 kg/t
Lime
1 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows moderate gold recovery at a finer grind, still indicating challenges for heap leaching this material.

Negative factors

  • Recovery is moderate for gold in fresh rock at this grind size for a heap leach scenario.

Evidence · table

“58 %”

Context: 0.764

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 34 %Head Grade: 4.33Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-002 dacite lapilli tuff 130' - 180' fresh
Grind P80
25000 µm
Leach Time
336 hours

Recovery

Recovery
34 %
Recovery Basis
actual_test
Head Grade
4.33
Head Grade Unit
g/t
Tailings Grade
2.86
Tailings Grade Unit
g/t

Reagents

Cyanide
0.12 kg/t
Lime
1 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak silver recovery at a finer grind, indicating challenges for heap leaching this material.

Negative factors

  • Recovery is weak for silver in fresh rock at this grind size for a heap leach scenario.

Evidence · table

“34 %”

Context: 4.33

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 34% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 39 %Head Grade: 1.665Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-002 dacite lapilli tuff 130' - 180' fresh
Grind P80
9500 µm
Leach Time
336 hours

Recovery

Recovery
39 %
Recovery Basis
actual_test
Head Grade
1.665
Head Grade Unit
g/t
Tailings Grade
1.013
Tailings Grade Unit
g/t

Reagents

Cyanide
0.24 kg/t
Lime
1 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak gold recovery even at a finer grind, suggesting inherent challenges for heap leaching this material.

Negative factors

  • Recovery is weak for gold in fresh rock even at a finer grind size for a heap leach scenario.

Evidence · table

“39 %”

Context: 1.665

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 39% is below the weak band (45%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 27 %Head Grade: 6.13Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-002 dacite lapilli tuff 130' - 180' fresh
Grind P80
9500 µm
Leach Time
336 hours

Recovery

Recovery
27 %
Recovery Basis
actual_test
Head Grade
6.13
Head Grade Unit
g/t
Tailings Grade
4.46
Tailings Grade Unit
g/t

Reagents

Cyanide
0.24 kg/t
Lime
1 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak silver recovery even at a finer grind, suggesting inherent challenges for heap leaching this material.

Negative factors

  • Recovery is weak for silver in fresh rock even at a finer grind size for a heap leach scenario.

Evidence · table

“27 %”

Context: 6.13

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 27% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 85 %Head Grade: 0.447Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-002 dacite lapilli tuff 130' - 180' fresh (Pulverized)
Leach Time
96 hours

Recovery

Recovery
85 %
Recovery Basis
actual_test
Head Grade
0.447
Head Grade Unit
g/t
Tailings Grade
0.066
Tailings Grade Unit
g/t

Reagents

Cyanide
0.19 kg/t
Lime
1.75 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Strong gold recovery from pulverized fresh rock indicates good liberation at very fine grind, but this is not applicable to heap leach processing.

Positive factors

  • Strong gold recovery achieved with pulverized material, indicating good liberation at very fine grind.

Negative factors

  • Pulverized grind is not representative of heap leach conditions.

Evidence · table

“85 %”

Context: 0.447

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

High Recoverypositive

Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 85% is at or above the exceptional band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 53 %Head Grade: 3.85Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-002 dacite lapilli tuff 130' - 180' fresh (Pulverized)
Leach Time
96 hours

Recovery

Recovery
53 %
Recovery Basis
actual_test
Head Grade
3.85
Head Grade Unit
g/t
Tailings Grade
1.83
Tailings Grade Unit
g/t

Reagents

Cyanide
0.19 kg/t
Lime
1.75 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Moderate silver recovery from pulverized fresh rock indicates some liberation challenges even at very fine grind, and is not applicable to heap leach processing.

Negative factors

  • Recovery is moderate for silver even with pulverized material, suggesting some challenges.

Evidence · table

“53 %”

Context: 3.85

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 53% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 29 %Head Grade: 1.039Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 95' - 145' oxide
Grind P80
50000 µm
Leach Time
336 hours

Recovery

Recovery
29 %
Recovery Basis
actual_test
Head Grade
1.039
Head Grade Unit
g/t
Tailings Grade
0.738
Tailings Grade Unit
g/t

Reagents

Cyanide
0.09 kg/t
Lime
3.75 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows weak gold recovery at a coarse grind, indicating potential issues with liberation or kinetics at this size.

Negative factors

  • Recovery is weak for gold in oxide material at this coarse grind size for a heap leach scenario.

Evidence · table

“29 %”

Context: 1.039

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 29% is below the weak band (45%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 71 %Head Grade: 4.55Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 95' - 145' oxide
Grind P80
50000 µm
Leach Time
336 hours

Recovery

Recovery
71 %
Recovery Basis
actual_test
Head Grade
4.55
Head Grade Unit
g/t
Tailings Grade
1.3
Tailings Grade Unit
g/t

Reagents

Cyanide
0.09 kg/t
Lime
3.75 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows strong silver recovery at a coarse grind, which is positive for heap leach potential.

Positive factors

  • Strong silver recovery for oxide material at a coarse grind size is positive for heap leaching.

Evidence · table

“71 %”

Context: 4.55

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 71% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 81 %Head Grade: 0.301Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 95' - 145' oxide
Grind P80
25000 µm
Leach Time
336 hours

Recovery

Recovery
81 %
Recovery Basis
actual_test
Head Grade
0.301
Head Grade Unit
g/t
Tailings Grade
0.058
Tailings Grade Unit
g/t

Reagents

Cyanide
0.13 kg/t
Lime
4 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows strong gold recovery at a 25mm crush, which is highly positive for heap leach potential.

Positive factors

  • Strong gold recovery for oxide material at a 25mm crush is very positive for heap leaching.

Evidence · table

“81 %”

Context: 0.301

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

High Recoverypositive

Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 81% is at or above the exceptional band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 65 %Head Grade: 2.62Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 95' - 145' oxide
Grind P80
25000 µm
Leach Time
336 hours

Recovery

Recovery
65 %
Recovery Basis
actual_test
Head Grade
2.62
Head Grade Unit
g/t
Tailings Grade
0.92
Tailings Grade Unit
g/t

Reagents

Cyanide
0.13 kg/t
Lime
4 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows moderate to strong silver recovery at a 25mm crush, which is positive for heap leach potential.

Positive factors

  • Moderate to strong silver recovery for oxide material at a 25mm crush is positive for heap leaching.

Evidence · table

“65 %”

Context: 2.62

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 65% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 77 %Head Grade: 0.299Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 95' - 145' oxide
Grind P80
9500 µm
Leach Time
336 hours

Recovery

Recovery
77 %
Recovery Basis
actual_test
Head Grade
0.299
Head Grade Unit
g/t
Tailings Grade
0.07
Tailings Grade Unit
g/t

Reagents

Cyanide
0.2 kg/t
Lime
5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows strong gold recovery at a finer grind, which is positive for heap leach potential.

Positive factors

  • Strong gold recovery for oxide material at a finer grind is positive for heap leaching.

Evidence · table

“77 %”

Context: 0.299

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

High Recoverypositive

Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 77% is at or above the exceptional band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 58 %Head Grade: 4.68Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 95' - 145' oxide
Grind P80
9500 µm
Leach Time
336 hours

Recovery

Recovery
58 %
Recovery Basis
actual_test
Head Grade
4.68
Head Grade Unit
g/t
Tailings Grade
1.97
Tailings Grade Unit
g/t

Reagents

Cyanide
0.2 kg/t
Lime
5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows moderate silver recovery at a finer grind, which is positive for heap leach potential.

Positive factors

  • Moderate silver recovery for oxide material at a finer grind is positive for heap leaching.

Evidence · table

“58 %”

Context: 4.68

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 58% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 87 %Head Grade: 0.328Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 95' - 145' oxide (Pulverized)
Leach Time
96 hours

Recovery

Recovery
87 %
Recovery Basis
actual_test
Head Grade
0.328
Head Grade Unit
g/t
Tailings Grade
0.044
Tailings Grade Unit
g/t

Reagents

Cyanide
1.72 kg/t
Lime
4.75 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Strong gold recovery from pulverized oxide material indicates good liberation at very fine grind, but this is not applicable to heap leach processing.

Positive factors

  • Strong gold recovery achieved with pulverized material, indicating good liberation at very fine grind.

Negative factors

  • Pulverized grind is not representative of heap leach conditions.

Evidence · table

“87 %”

Context: 0.328

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

High Recoverypositive

Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 87% is at or above the exceptional band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 80 %Head Grade: 3.51Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 95' - 145' oxide (Pulverized)
Leach Time
96 hours

Recovery

Recovery
80 %
Recovery Basis
actual_test
Head Grade
3.51
Head Grade Unit
g/t
Tailings Grade
0.71
Tailings Grade Unit
g/t

Reagents

Cyanide
1.72 kg/t
Lime
4.75 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Strong silver recovery from pulverized oxide material indicates good liberation at very fine grind, but this is not applicable to heap leach processing.

Positive factors

  • Strong silver recovery achieved with pulverized material, indicating good liberation at very fine grind.

Negative factors

  • Pulverized grind is not representative of heap leach conditions.

Evidence · table

“80 %”

Context: 3.51

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 60 %Head Grade: 0.2Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 195' - 245' oxide
Grind P80
50000 µm
Leach Time
336 hours

Recovery

Recovery
60 %
Recovery Basis
actual_test
Head Grade
0.2
Head Grade Unit
g/t
Tailings Grade
0.079
Tailings Grade Unit
g/t

Reagents

Cyanide
0.07 kg/t
Lime
4.5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows moderate gold recovery at a coarse grind, which is positive for heap leach potential.

Positive factors

  • Moderate gold recovery for oxide material at a coarse grind size is positive for heap leaching.

Evidence · table

“60 %”

Context: 0.200

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 49 %Head Grade: 3.69Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 195' - 245' oxide
Grind P80
50000 µm
Leach Time
336 hours

Recovery

Recovery
49 %
Recovery Basis
actual_test
Head Grade
3.69
Head Grade Unit
g/t
Tailings Grade
1.89
Tailings Grade Unit
g/t

Reagents

Cyanide
0.07 kg/t
Lime
4.5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows weak silver recovery at a coarse grind, indicating potential issues with liberation or kinetics at this size.

Negative factors

  • Recovery is weak for silver in oxide material at this coarse grind size for a heap leach scenario.

Evidence · table

“49 %”

Context: 3.69

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 49% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 65 %Head Grade: 0.211Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 195' - 245' oxide
Grind P80
25000 µm
Leach Time
336 hours

Recovery

Recovery
65 %
Recovery Basis
actual_test
Head Grade
0.211
Head Grade Unit
g/t
Tailings Grade
0.074
Tailings Grade Unit
g/t

Reagents

Cyanide
0.1 kg/t
Lime
5.5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows moderate to strong gold recovery at a 25mm crush, which is positive for heap leach potential.

Positive factors

  • Moderate to strong gold recovery for oxide material at a 25mm crush is positive for heap leaching.

Evidence · table

“65 %”

Context: 0.211

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 61 %Head Grade: 4.88Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 195' - 245' oxide
Grind P80
25000 µm
Leach Time
336 hours

Recovery

Recovery
61 %
Recovery Basis
actual_test
Head Grade
4.88
Head Grade Unit
g/t
Tailings Grade
1.91
Tailings Grade Unit
g/t

Reagents

Cyanide
0.1 kg/t
Lime
5.5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows moderate to strong silver recovery at a 25mm crush, which is positive for heap leach potential.

Positive factors

  • Moderate to strong silver recovery for oxide material at a 25mm crush is positive for heap leaching.

Evidence · table

“61 %”

Context: 4.88

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 61% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 76 %Head Grade: 0.181Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 195' - 245' oxide
Grind P80
9500 µm
Leach Time
336 hours

Recovery

Recovery
76 %
Recovery Basis
actual_test
Head Grade
0.181
Head Grade Unit
g/t
Tailings Grade
0.043
Tailings Grade Unit
g/t

Reagents

Cyanide
0.17 kg/t
Lime
6.5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows strong gold recovery at a finer grind, which is positive for heap leach potential.

Positive factors

  • Strong gold recovery for oxide material at a finer grind is positive for heap leaching.

Evidence · table

“76 %”

Context: 0.181

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

High Recoverypositive

Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 76% is at or above the exceptional band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 72 %Head Grade: 7.54Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 195' - 245' oxide
Grind P80
9500 µm
Leach Time
336 hours

Recovery

Recovery
72 %
Recovery Basis
actual_test
Head Grade
7.54
Head Grade Unit
g/t
Tailings Grade
2.11
Tailings Grade Unit
g/t

Reagents

Cyanide
0.17 kg/t
Lime
6.5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on oxide material shows strong silver recovery at a finer grind, which is positive for heap leach potential.

Positive factors

  • Strong silver recovery for oxide material at a finer grind is positive for heap leaching.

Evidence · table

“72 %”

Context: 7.54

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 72% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 83 %Head Grade: 0.135Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 195' - 245' oxide (Pulverized)
Leach Time
96 hours

Recovery

Recovery
83 %
Recovery Basis
actual_test
Head Grade
0.135
Head Grade Unit
g/t
Tailings Grade
0.023
Tailings Grade Unit
g/t

Reagents

Lime
7 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Strong gold recovery from pulverized oxide material indicates good liberation at very fine grind, but this is not applicable to heap leach processing.

Positive factors

  • Strong gold recovery achieved with pulverized material, indicating good liberation at very fine grind.

Negative factors

  • Pulverized grind is not representative of heap leach conditions.

Evidence · table

“83 %”

Context: 0.135

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

High Recoverypositive

Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 83% is at or above the exceptional band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 86 %Head Grade: 5.3Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 195' - 245' oxide (Pulverized)
Leach Time
96 hours

Recovery

Recovery
86 %
Recovery Basis
actual_test
Head Grade
5.3
Head Grade Unit
g/t
Tailings Grade
0.74
Tailings Grade Unit
g/t

Reagents

Lime
7 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Strong silver recovery from pulverized oxide material indicates good liberation at very fine grind, but this is not applicable to heap leach processing.

Positive factors

  • Strong silver recovery achieved with pulverized material, indicating good liberation at very fine grind.

Negative factors

  • Pulverized grind is not representative of heap leach conditions.

Evidence · table

“86 %”

Context: 5.30

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 40 %Head Grade: 0.152Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 295' - 345' fresh
Grind P80
50000 µm
Leach Time
336 hours

Recovery

Recovery
40 %
Recovery Basis
actual_test
Head Grade
0.152
Head Grade Unit
g/t
Tailings Grade
0.091
Tailings Grade Unit
g/t

Reagents

Cyanide
0.12 kg/t
Lime
3.75 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak gold recovery at a coarse grind, indicating challenges for heap leaching this material.

Negative factors

  • Recovery is weak for gold in fresh rock at this coarse grind size for a heap leach scenario.

Evidence · table

“40 %”

Context: 0.152

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 40% is below the weak band (45%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 41 %Head Grade: 2.48Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 295' - 345' fresh
Grind P80
50000 µm
Leach Time
336 hours

Recovery

Recovery
41 %
Recovery Basis
actual_test
Head Grade
2.48
Head Grade Unit
g/t
Tailings Grade
1.47
Tailings Grade Unit
g/t

Reagents

Cyanide
0.12 kg/t
Lime
3.75 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak silver recovery at a coarse grind, indicating challenges for heap leaching this material.

Negative factors

  • Recovery is weak for silver in fresh rock at this coarse grind size for a heap leach scenario.

Evidence · table

“41 %”

Context: 2.48

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 41% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 29 %Head Grade: 0.125Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 295' - 345' fresh
Grind P80
25000 µm
Leach Time
336 hours

Recovery

Recovery
29 %
Recovery Basis
actual_test
Head Grade
0.125
Head Grade Unit
g/t
Tailings Grade
0.088
Tailings Grade Unit
g/t

Reagents

Cyanide
0.35 kg/t
Lime
4 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak gold recovery at a finer grind, indicating significant challenges for heap leaching this material.

Negative factors

  • Recovery is weak for gold in fresh rock at this grind size for a heap leach scenario.

Evidence · table

“29 %”

Context: 0.125

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 29% is below the weak band (45%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 45 %Head Grade: 3.07Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 295' - 345' fresh
Grind P80
25000 µm
Leach Time
336 hours

Recovery

Recovery
45 %
Recovery Basis
actual_test
Head Grade
3.07
Head Grade Unit
g/t
Tailings Grade
1.68
Tailings Grade Unit
g/t

Reagents

Cyanide
0.35 kg/t
Lime
4 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak silver recovery at a finer grind, indicating challenges for heap leaching this material.

Negative factors

  • Recovery is weak for silver in fresh rock at this grind size for a heap leach scenario.

Evidence · table

“45 %”

Context: 3.07

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 45% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 34 %Head Grade: 0.179Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 295' - 345' fresh
Grind P80
9500 µm
Leach Time
336 hours

Recovery

Recovery
34 %
Recovery Basis
actual_test
Head Grade
0.179
Head Grade Unit
g/t
Tailings Grade
0.118
Tailings Grade Unit
g/t

Reagents

Cyanide
0.3 kg/t
Lime
4.5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak gold recovery even at a finer grind, suggesting inherent challenges for heap leaching this material.

Negative factors

  • Recovery is weak for gold in fresh rock even at a finer grind size for a heap leach scenario.

Evidence · table

“34 %”

Context: 0.179

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 34% is below the weak band (45%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 38 %Head Grade: 3.37Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 295' - 345' fresh
Grind P80
9500 µm
Leach Time
336 hours

Recovery

Recovery
38 %
Recovery Basis
actual_test
Head Grade
3.37
Head Grade Unit
g/t
Tailings Grade
2.09
Tailings Grade Unit
g/t

Reagents

Cyanide
0.3 kg/t
Lime
4.5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak silver recovery even at a finer grind, suggesting inherent challenges for heap leaching this material.

Negative factors

  • Recovery is weak for silver in fresh rock even at a finer grind size for a heap leach scenario.

Evidence · table

“38 %”

Context: 3.37

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 38% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 47 %Head Grade: 0.133Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 295' - 345' fresh (Pulverized)
Leach Time
96 hours

Recovery

Recovery
47 %
Recovery Basis
actual_test
Head Grade
0.133
Head Grade Unit
g/t
Tailings Grade
0.071
Tailings Grade Unit
g/t

Reagents

Cyanide
1.6 kg/t
Lime
5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Weak gold recovery from pulverized fresh rock indicates significant liberation challenges even at very fine grind, and is not applicable to heap leach processing.

Negative factors

  • Recovery is weak for gold even with pulverized material, suggesting significant challenges.

Evidence · table

“47 %”

Context: 0.133

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 58 %Head Grade: 3.03Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-007 dacite autobreccia 295' - 345' fresh (Pulverized)
Leach Time
96 hours

Recovery

Recovery
58 %
Recovery Basis
actual_test
Head Grade
3.03
Head Grade Unit
g/t
Tailings Grade
1.26
Tailings Grade Unit
g/t

Reagents

Cyanide
1.6 kg/t
Lime
5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Moderate silver recovery from pulverized fresh rock indicates some liberation challenges even at very fine grind, and is not applicable to heap leach processing.

Negative factors

  • Recovery is moderate for silver even with pulverized material, suggesting some challenges.

Evidence · table

“58 %”

Context: 3.03

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 58% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 22 %Head Grade: 0.338Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-008 dacite lithic tuff 510' - 560' fresh
Grind P80
50000 µm
Leach Time
336 hours

Recovery

Recovery
22 %
Recovery Basis
actual_test
Head Grade
0.338
Head Grade Unit
g/t
Tailings Grade
0.262
Tailings Grade Unit
g/t

Reagents

Cyanide
0.21 kg/t
Lime
2 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows very weak gold recovery at a coarse grind, indicating significant challenges for heap leaching this material.

Negative factors

  • Recovery is very weak for gold in fresh rock at this coarse grind size for a heap leach scenario.

Evidence · table

“22 %”

Context: 0.338

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 22% is below the weak band (45%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 40 %Head Grade: 9.42Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-008 dacite lithic tuff 510' - 560' fresh
Grind P80
50000 µm
Leach Time
336 hours

Recovery

Recovery
40 %
Recovery Basis
actual_test
Head Grade
9.42
Head Grade Unit
g/t
Tailings Grade
5.64
Tailings Grade Unit
g/t

Reagents

Cyanide
0.21 kg/t
Lime
2 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak silver recovery at a coarse grind, indicating challenges for heap leaching this material.

Negative factors

  • Recovery is weak for silver in fresh rock at this coarse grind size for a heap leach scenario.

Evidence · table

“40 %”

Context: 9.42

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 40% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 20 %Head Grade: 0.394Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-008 dacite lithic tuff 510' - 560' fresh
Grind P80
25000 µm
Leach Time
336 hours

Recovery

Recovery
20 %
Recovery Basis
actual_test
Head Grade
0.394
Head Grade Unit
g/t
Tailings Grade
0.317
Tailings Grade Unit
g/t

Reagents

Cyanide
0.21 kg/t
Lime
2 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows very weak gold recovery at a finer grind, indicating significant challenges for heap leaching this material.

Negative factors

  • Recovery is very weak for gold in fresh rock at this grind size for a heap leach scenario.

Evidence · table

“20 %”

Context: 0.394

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 20% is below the weak band (45%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 42 %Head Grade: 7.18Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-008 dacite lithic tuff 510' - 560' fresh
Grind P80
25000 µm
Leach Time
336 hours

Recovery

Recovery
42 %
Recovery Basis
actual_test
Head Grade
7.18
Head Grade Unit
g/t
Tailings Grade
4.18
Tailings Grade Unit
g/t

Reagents

Cyanide
0.21 kg/t
Lime
2 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows weak silver recovery at a finer grind, indicating challenges for heap leaching this material.

Negative factors

  • Recovery is weak for silver in fresh rock at this grind size for a heap leach scenario.

Evidence · table

“42 %”

Context: 7.18

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 42% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 20 %Head Grade: 0.459Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-008 dacite lithic tuff 510' - 560' fresh
Grind P80
9500 µm
Leach Time
336 hours

Recovery

Recovery
20 %
Recovery Basis
actual_test
Head Grade
0.459
Head Grade Unit
g/t
Tailings Grade
0.367
Tailings Grade Unit
g/t

Reagents

Cyanide
0.21 kg/t
Lime
2 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows very weak gold recovery even at a finer grind, suggesting inherent challenges for heap leaching this material.

Negative factors

  • Recovery is very weak for gold in fresh rock even at a finer grind size for a heap leach scenario.

Evidence · table

“20 %”

Context: 0.459

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 20% is below the weak band (45%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 59 %Head Grade: 7.81Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-008 dacite lithic tuff 510' - 560' fresh
Grind P80
9500 µm
Leach Time
336 hours

Recovery

Recovery
59 %
Recovery Basis
actual_test
Head Grade
7.81
Head Grade Unit
g/t
Tailings Grade
3.19
Tailings Grade Unit
g/t

Reagents

Cyanide
0.21 kg/t
Lime
2 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Initial bottle roll test on fresh rock shows moderate silver recovery even at a finer grind, suggesting some challenges for heap leaching this material.

Negative factors

  • Recovery is moderate for silver in fresh rock even at a finer grind size for a heap leach scenario.

Evidence · table

“59 %”

Context: 7.81

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 59% is below the weak band (75%)

bottle rollRosebud Open-Pit, Heap-Leach Project · goldRecovery: 29 %Head Grade: 0.599Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-008 dacite lithic tuff 510' - 560' fresh (Pulverized)
Leach Time
96 hours

Recovery

Recovery
29 %
Recovery Basis
actual_test
Head Grade
0.599
Head Grade Unit
g/t
Tailings Grade
0.425
Tailings Grade Unit
g/t

Reagents

Cyanide
0.51 kg/t
Lime
2.5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Weak gold recovery from pulverized fresh rock indicates significant liberation challenges even at very fine grind, and is not applicable to heap leach processing.

Negative factors

  • Recovery is weak for gold even with pulverized material, suggesting significant challenges.

Evidence · table

“29 %”

Context: 0.599

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 29% is below the weak band (45%)

bottle rollRosebud Open-Pit, Heap-Leach Project · silverRecovery: 62 %Head Grade: 11.93Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
bottle roll
Processing Route
heap leach (bottle roll test)
Sample
BG26-008 dacite lithic tuff 510' - 560' fresh (Pulverized)
Leach Time
96 hours

Recovery

Recovery
62 %
Recovery Basis
actual_test
Head Grade
11.93
Head Grade Unit
g/t
Tailings Grade
4.49
Tailings Grade Unit
g/t

Reagents

Cyanide
0.51 kg/t
Lime
2.5 kg/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Moderate silver recovery from pulverized fresh rock indicates some liberation challenges even at very fine grind, and is not applicable to heap leach processing.

Negative factors

  • Recovery is moderate for silver even with pulverized material, suggesting some challenges.

Evidence · table

“62 %”

Context: 11.93

Tags used in scoring

Heap Leach Routeneutral

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

Why it applies: processing_route matches the heap_leach signal

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 62% is below the weak band (75%)

cyanide shake testRosebud Open-Pit, Heap-Leach Project · goldRecovery: 86 %Head Grade: 0.533Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test
Sample
BG26-002 130' - 180'

Recovery

Recovery
86 %
Recovery Basis
actual_test
Head Grade
0.533
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Cyanide shake test shows strong gold extraction, confirming the material's leachability when finely ground.

Positive factors

  • Strong gold extraction in cyanide shake test confirms good leachability under ideal conditions.

Evidence · table

“86%”

Context: 0.533

cyanide shake testRosebud Open-Pit, Heap-Leach Project · silverRecovery: 78 %Head Grade: 2.91Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test
Sample
BG26-002 130' - 180'

Recovery

Recovery
78 %
Recovery Basis
actual_test
Head Grade
2.91
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Cyanide shake test shows strong silver extraction, confirming the material's leachability when finely ground.

Positive factors

  • Strong silver extraction in cyanide shake test confirms good leachability under ideal conditions.

Evidence · table

“78%”

Context: 2.91

cyanide shake testRosebud Open-Pit, Heap-Leach Project · goldRecovery: 55 %Head Grade: 0.182Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test
Sample
BG26-007 95' - 145'

Recovery

Recovery
55 %
Recovery Basis
actual_test
Head Grade
0.182
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Cyanide shake test shows moderate gold extraction, indicating some challenges for leachability even when finely ground.

Negative factors

  • Moderate gold extraction in cyanide shake test suggests some limitations even under ideal conditions.

Evidence · table

“55%”

Context: 0.182

Tags used in scoring

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 55% is below the weak band (80%)

cyanide shake testRosebud Open-Pit, Heap-Leach Project · silverRecovery: 84 %Head Grade: 1.41Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test
Sample
BG26-007 95' - 145'

Recovery

Recovery
84 %
Recovery Basis
actual_test
Head Grade
1.41
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Cyanide shake test shows strong silver extraction, confirming the material's leachability when finely ground.

Positive factors

  • Strong silver extraction in cyanide shake test confirms good leachability under ideal conditions.

Evidence · table

“84%”

Context: 1.41

cyanide shake testRosebud Open-Pit, Heap-Leach Project · goldRecovery: 28 %Head Grade: 0.213Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test
Sample
BG26-007 195' - 245'

Recovery

Recovery
28 %
Recovery Basis
actual_test
Head Grade
0.213
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Cyanide shake test shows weak gold extraction, indicating significant challenges for leachability even when finely ground.

Negative factors

  • Weak gold extraction in cyanide shake test indicates significant challenges even under ideal conditions.

Evidence · table

“28%”

Context: 0.213

Tags used in scoring

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 28% is below the weak band (80%)

cyanide shake testRosebud Open-Pit, Heap-Leach Project · silverRecovery: 96 %Head Grade: 4.39Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test
Sample
BG26-007 195' - 245'

Recovery

Recovery
96 %
Recovery Basis
actual_test
Head Grade
4.39
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Cyanide shake test shows exceptional silver extraction, confirming the material's excellent leachability when finely ground.

Positive factors

  • Exceptional silver extraction in cyanide shake test confirms excellent leachability under ideal conditions.

Evidence · table

“96%”

Context: 4.39

Tags used in scoring

High Recoverypositive

Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 96% is at or above the exceptional band (90%)

cyanide shake testRosebud Open-Pit, Heap-Leach Project · goldRecovery: 77 %Head Grade: 0.105Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test
Sample
BG26-007 295' - 345'

Recovery

Recovery
77 %
Recovery Basis
actual_test
Head Grade
0.105
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Cyanide shake test shows strong gold extraction, confirming the material's leachability when finely ground.

Positive factors

  • Strong gold extraction in cyanide shake test confirms good leachability under ideal conditions.

Evidence · table

“77%”

Context: 0.105

Tags used in scoring

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 77% is below the weak band (80%)

cyanide shake testRosebud Open-Pit, Heap-Leach Project · silverRecovery: 59 %Head Grade: 2.61Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test
Sample
BG26-007 295' - 345'

Recovery

Recovery
59 %
Recovery Basis
actual_test
Head Grade
2.61
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Cyanide shake test shows moderate silver extraction, indicating some challenges for leachability even when finely ground.

Negative factors

  • Moderate silver extraction in cyanide shake test suggests some limitations even under ideal conditions.

Evidence · table

“59%”

Context: 2.61

Tags used in scoring

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 59% is below the weak band (75%)

cyanide shake testRosebud Open-Pit, Heap-Leach Project · goldRecovery: 27 %Head Grade: 0.525Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test
Sample
BG26-008 510' - 560'

Recovery

Recovery
27 %
Recovery Basis
actual_test
Head Grade
0.525
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Cyanide shake test shows weak gold extraction, indicating significant challenges for leachability even when finely ground.

Negative factors

  • Weak gold extraction in cyanide shake test indicates significant challenges even under ideal conditions.

Evidence · table

“27%”

Context: 0.525

Tags used in scoring

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 27% is below the weak band (80%)

cyanide shake testRosebud Open-Pit, Heap-Leach Project · silverRecovery: 76 %Head Grade: 9.81Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test
Sample
BG26-008 510' - 560'

Recovery

Recovery
76 %
Recovery Basis
actual_test
Head Grade
9.81
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Cyanide shake test shows strong silver extraction, confirming the material's leachability when finely ground.

Positive factors

  • Strong silver extraction in cyanide shake test confirms good leachability under ideal conditions.

Evidence · table

“76%”

Context: 9.81

cyanide shake testRosebud Open-Pit, Heap-Leach Project · goldRecovery: 100 %Head Grade: 0.525Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
gold
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test (roast pre-treatment)
Sample
BG26-008 510' - 560' (Roast)

Recovery

Recovery
100 %
Recovery Basis
actual_test
Head Grade
0.525
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Exceptional gold extraction after roasting confirms that the material is refractory but amenable to roasting, providing a potential processing solution despite added complexity.

Positive factors

  • Exceptional gold extraction after roasting indicates that roasting effectively addresses the refractory nature of the material.

Negative factors

  • Roasting adds complexity and cost to the processing flowsheet.

Evidence · table

“<100%”

Context: 0.525

Tags used in scoring

High Recoverypositive

Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 100% is at or above the exceptional band (95%)

cyanide shake testRosebud Open-Pit, Heap-Leach Project · silverRecovery: 22 %Head Grade: 9.81Head Grade Unit: g/tView all details
Link to this fact

Identity

Project
Rosebud Open-Pit, Heap-Leach Project
Commodity
silver
Region
usa_nv
Reported Region
Pershing County, Nevada
Ticker
BGAU

Test Work

Program Status
preliminary
Test Type
cyanide shake test
Processing Route
cyanide shake test (roast pre-treatment)
Sample
BG26-008 510' - 560' (Roast)

Recovery

Recovery
22 %
Recovery Basis
actual_test
Head Grade
9.81
Head Grade Unit
g/t

Lab

Laboratory
Kappes, Cassiday and Associates of Reno (KCA)
Consultant
Jim Wickens

Review

Needs Review
No
Historical
No

Dates

Event date
2026-08-27T00:00:00.000Z

Reasoning: Very weak silver extraction after roasting suggests that roasting negatively impacts silver recovery, which is a significant concern for polymetallic processing.

Negative factors

  • Very weak silver extraction after roasting indicates that roasting is detrimental to silver recovery for this material.

Evidence · table

“22%”

Context: 9.81

Tags used in scoring

Low Recoverynegative

Recovery below the weak band for the commodity and processing route.

Why it applies: 22% is below the weak band (75%)

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.