# Corvus Gold Begins Phase II Exploration Drill Program, North Bullfrog Project, Nevada Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979 Original source: https://money.tmx.com/en/quote/KOR/news/66563560/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev Publisher: tmx Original announcement: 2015-08-11T12:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Corvus Gold Inc. - Ticker: KOR - Exchange: TSX - Region: Nevada - Primary commodity: Gold - Secondary commodities: Silver, Mercury - Document categories: Resource update, Drill results - Extracted: 2026-09-16 07:45:18 UTC Narrative sentiment: 0.40 · Bullish ## Minestarters Atlas summary Corvus Gold has launched an 8,000-metre Phase II RC drill program at the North Bullfrog Project in Nevada, targeting both resource expansion in the west and new discoveries in the Eastern Steam-heated Zone. The company also provided a detailed summary of its existing NI 43-101 compliant mineral resources for both mill and heap leach processing. Reasoning: The announcement details the commencement of a significant 8,000m drill program targeting resource expansion and new discoveries, supported by a substantial existing NI 43-101 compliant resource. - Positive factor: Large scale resource expansion potential - Positive factor: High-grade discovery targets identified - Positive factor: Comprehensive NI 43-101 compliant resource disclosure - Negative factor: Mercury values noted in some systems Facts used in scoring: 15 ## Classification and evidence **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 specific QA/QC protocols including blind certified standards, blanks, and duplicate samples sent to ALS Chemex. Evidence · text > Quality control is monitored by the insertion of blind certified standard reference materials and blanks into each sample shipment. **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The resource estimates are explicitly stated to be prepared in accordance with NI 43-101 standards. Evidence · text > all resource estimates contained in or incorporated by reference in this press release have been prepared in accordance with NI 43-101 **Maiden Resource** Polarity: neutral Definition: First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component. No prior estimate exists, so every change band is not applicable. Why it applies: The document describes the Phase II program as testing new targets and expanding existing resources, but does not explicitly label the current resource as a maiden resource. Evidence · text > The two pronged phase II drill program will focus on the evaluation of near-term high-grade resource expansion in the west and new large deposit discovery potential in the east. ## Extracted facts Stored fact records: 15. Some facts used in scoring do not have a stored record. ## Drill Results (3) ### NB-13-366 [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-drill-facts-0) North Bullfrog · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: NB-13-366 - Project: North Bullfrog - Commodity: gold - Region: usa\_nv - Reported Region: usa\_nv - Ticker: KOR #### Geometry - Grade: 1.03 - Grade Unit: g/t - Intercept: 20 m #### Classification - Sample Type: drill #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes - Historical Source Date: 2014-01-09T00:00:00.000Z #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Historical intercept mentioned as part of program context. Evidence · text > 20m of 1.03 g/t Au #### Tags used in scoring **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 **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release **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: "The project has excellent infrastructure, being adjacent to a major highway and power corridor as well as a large water " ### NB-13-366 [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-drill-facts-1) North Bullfrog · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: NB-13-366 - Project: North Bullfrog - Commodity: gold - Region: usa\_nv - Reported Region: usa\_nv - Ticker: KOR #### Geometry - Grade: 1.26 - Grade Unit: g/t - Intercept: 17.5 m #### Classification - Sample Type: drill #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes - Historical Source Date: 2014-01-09T00:00:00.000Z #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Historical intercept mentioned as part of program context. Evidence · text > 17.5m @ 1.26 g/t Au #### Tags used in scoring **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 **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release **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: "The project has excellent infrastructure, being adjacent to a major highway and power corridor as well as a large water " ### Rhyolite Vein [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-drill-facts-2) North Bullfrog · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: Rhyolite Vein - Project: North Bullfrog - Commodity: gold - Region: usa\_nv - Reported Region: usa\_nv - Ticker: KOR #### Geometry - Grade: 3.3 - Grade Unit: g/t - Intercept: 11.3 m #### Classification - Sample Type: drill #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes - Historical Source Date: 2014-09-04T00:00:00.000Z #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Historical high-grade intercept. Evidence · text > Rhyolite Vein 11.3m @ 3.3 g/t Au #### Tags used in scoring **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 **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release **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: "The project has excellent infrastructure, being adjacent to a major highway and power corridor as well as a large water " ## Resource Estimates (12) ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-3) North Bullfrog Project · gold #### Identity - Project: North Bullfrog Project - Commodity: gold - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:7abec524203c7ae2e386 - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: measured - Tonnes: 3860000 - Grade: 2.55 - Grade Unit: g/t - Contained Metal: 316500 - Contained Unit: oz - Cutoff Grade: 0.52 - Cutoff Unit: g/t gold #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Measured resource component of the mill process resource. Evidence · text > measured mineral resource of 3.86 Mt at an average grade of 2.55 g/t gold and 19.70 g/t silver, containing 316.5k ounces of gold and 2,445k ounces of silver #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-4) North Bullfrog Project · silver #### Identity - Project: North Bullfrog Project - Commodity: silver - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:7abec524203c7ae2e386 - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: measured - Tonnes: 3860000 - Grade: 19.7 - Grade Unit: g/t - Contained Metal: 2445000 - Contained Unit: oz - Cutoff Grade: 0.52 - Cutoff Unit: g/t gold #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Measured resource component of the mill process resource. Evidence · text > 19.70 g/t silver, containing ... 2,445k ounces of silver #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-5) North Bullfrog Project · gold #### Identity - Project: North Bullfrog Project - Commodity: gold - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:abb81901ba7896794b2c - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 1810000 - Grade: 1.53 - Grade Unit: g/t - Contained Metal: 89100 - Contained Unit: oz - Cutoff Grade: 0.52 - Cutoff Unit: g/t gold #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Indicated resource component of the mill process resource. Evidence · text > indicated mineral resource of 1.81 Mt at an average grade of 1.53 g/t gold, and 10.20 g/t silver, containing 89.1k ounces of gold and 593.6k ounces of silver #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-6) North Bullfrog Project · silver #### Identity - Project: North Bullfrog Project - Commodity: silver - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:abb81901ba7896794b2c - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 1810000 - Grade: 10.2 - Grade Unit: g/t - Contained Metal: 593600 - Contained Unit: oz - Cutoff Grade: 0.52 - Cutoff Unit: g/t gold #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Indicated resource component of the mill process resource. Evidence · text > 10.20 g/t silver, containing ... 593.6k ounces of silver #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-7) North Bullfrog Project · gold #### Identity - Project: North Bullfrog Project - Commodity: gold - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:66b30b76b24886f916bc - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 1480000 - Grade: 0.83 - Grade Unit: g/t - Contained Metal: 39500 - Contained Unit: oz - Cutoff Grade: 0.52 - Cutoff Unit: g/t gold #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Inferred resource component of the mill process resource. Evidence · text > inferred resource of 1.48 Mt at an average grade of 0.83 g/t gold and 4.26 g/t silver, containing 39.5k ounces of gold and 202.7k ounces of silver #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-8) North Bullfrog Project · silver #### Identity - Project: North Bullfrog Project - Commodity: silver - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:66b30b76b24886f916bc - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 1480000 - Grade: 4.26 - Grade Unit: g/t - Contained Metal: 202700 - Contained Unit: oz - Cutoff Grade: 0.52 - Cutoff Unit: g/t gold #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Inferred resource component of the mill process resource. Evidence · text > 4.26 g/t silver, containing ... 202.7k ounces of silver #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-9) North Bullfrog Project · gold #### Identity - Project: North Bullfrog Project - Commodity: gold - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:853facfc23fd1cddeee8 - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: measured - Tonnes: 300000 - Grade: 0.25 - Grade Unit: g/t - Contained Metal: 2400 - Contained Unit: oz - Cutoff Grade: 0.15 - Cutoff Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Measured resource component of the heap leach process resource. Evidence · text > measured mineral resource of 0.3 Mt at an average grade of 0.25 g/t gold and 2.76 g/t silver, containing 2.4k ounces of gold and 26.6k ounces of silver #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-10) North Bullfrog Project · silver #### Identity - Project: North Bullfrog Project - Commodity: silver - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:853facfc23fd1cddeee8 - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: measured - Tonnes: 300000 - Grade: 2.76 - Grade Unit: g/t - Contained Metal: 26600 - Contained Unit: oz - Cutoff Grade: 0.15 - Cutoff Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Measured resource component of the heap leach process resource. Evidence · text > 2.76 g/t silver, containing ... 26.6k ounces of silver #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-11) North Bullfrog Project · gold #### Identity - Project: North Bullfrog Project - Commodity: gold - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:a92b47d3ecb3216c8b9a - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 22860000 - Grade: 0.3 - Grade Unit: % - Contained Metal: 220500 - Contained Unit: koz - Cutoff Grade: 0.15 - Cutoff Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Indicated resource component of the heap leach process resource. Evidence · text > indicated mineral resource of 22.86 Mt at an average grade of 0.30 g/t gold and 0.43 g/t silver, containing 220.5k ounces of gold and 316.1k ounces of silver #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-12) North Bullfrog Project · silver #### Identity - Project: North Bullfrog Project - Commodity: silver - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:a92b47d3ecb3216c8b9a - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 22860000 - Grade: 0.43 - Grade Unit: g/t - Contained Metal: 316100 - Contained Unit: koz - Cutoff Grade: 0.15 - Cutoff Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Indicated resource component of the heap leach process resource. Evidence · text > 0.43 g/t silver, containing ... 316.1k ounces of silver #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-13) North Bullfrog Project · gold #### Identity - Project: North Bullfrog Project - Commodity: gold - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:34e9b18e2894de283d9a - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 176300000 - Grade: 0.19 - Grade Unit: g/t - Contained Metal: 1077400 - Contained Unit: koz - Cutoff Grade: 0.15 - Cutoff Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Inferred resource component of the heap leach process resource. Evidence · text > inferred mineral resource of 176.3 Mt at an average grade of 0.19 g/t gold and 0.67 g/t silver, containing 1,077.4k ounces of gold and 3,799.2k ounces of silver #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-phase-ii-exploration-drill-program-north-bullfrog-project-nev--0807147a-3f4a-45bc-9814-de21138bd979#fact-resource-facts-14) North Bullfrog Project · silver #### Identity - Project: North Bullfrog Project - Commodity: silver - Region: usa\_nv - Reported Region: Nevada - Ticker: KOR #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:34e9b18e2894de283d9a - Deposit or zone: North Bullfrog - Material type: oxide - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 176300000 - Grade: 0.67 - Grade Unit: g/t - Contained Metal: 3799200 - Contained Unit: koz - Cutoff Grade: 0.15 - Cutoff Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2015-08-11T00:00:00.000Z Reasoning: Inferred resource component of the heap leach process resource. Evidence · text > 0.67 g/t silver, containing ... 3,799.2k ounces of silver #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ## 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.