# Corvus Gold Begins 2016 Phase I Drill Program, North Bullfrog Project, Nevada

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/corvus-gold-begins-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5

Original source: https://money.tmx.com/en/quote/KOR/news/73368907/corvus-gold-begins-2016-phase-i-drill-program-north-bullfrog-project-nevada

Publisher: tmx

Original announcement: 2016-04-12T12:00:00.000Z

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, Copper

- Document categories: Resource update, Drill results

- Extracted: 2026-09-16 07:39:42 UTC

Narrative sentiment: 0.60 · Bullish

## Minestarters Atlas summary

Corvus Gold has commenced its 2016 Phase I drill program at the North Bullfrog Project in Nevada, focusing on the NW Sierra Blanca and Lower Savage targets. The 5,000 metre RC program aims to expand high-grade zones and test new structural targets identified during 2015 exploration.

Reasoning: The company is initiating a targeted drill program to expand known high-grade zones and test new structural targets, supported by a significant existing resource base.

- Positive factor: commencement of targeted Phase I drill program

- Positive factor: expansion of high-grade NW Sierra Blanca target

- Positive factor: testing of new Lower Savage target with high silver/copper potential

- Positive factor: substantial existing NI 43-101 mineral resources

Facts used in scoring: 18

## 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 mentions blind certified standard reference materials, 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

**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 and technical information are 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

**Inferred Resource**

Polarity: negative

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

Why it applies: The project contains significant inferred resource components in both mill and heap leach scenarios.

Evidence · text

> an inferred resource of 1.48 Mt at an average grade of 0.83 g/t gold

## Extracted facts

Stored fact records: 18. Some facts used in scoring do not have a stored record.

## Drill Results (6)

### NB-15-267

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-drill-facts-0)

North Bullfrog · gold

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: NB-15-267
- Project: North Bullfrog
- Commodity: gold
- Region: usa\_nv
- Reported Region: usa\_nv
- Ticker: KOR

#### Geometry

- Grade: 3.47
- Grade Unit: g/t
- Intercept: 10.7 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: 2015-10-15T00:00:00.000Z

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Historical intercept reported as part of context for the new program.

- Positive factor: high-grade intercept

Evidence · text

> 10.7m @ 3.47 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-15-267

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-drill-facts-1)

North Bullfrog · silver

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: NB-15-267
- Project: North Bullfrog
- Commodity: silver
- Region: usa\_nv
- Reported Region: usa\_nv
- Ticker: KOR

#### Geometry

- Grade: 3.6
- Grade Unit: g/t
- Intercept: 10.7 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: 2015-10-15T00:00:00.000Z

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Historical silver grade reported as part of context.

Evidence · text

> 3.6 g/t Ag

#### 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-15-282

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-drill-facts-2)

North Bullfrog · gold

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: NB-15-282
- Project: North Bullfrog
- Commodity: gold
- Region: usa\_nv
- Reported Region: usa\_nv
- Ticker: KOR

#### Geometry

- Grade: 5
- Grade Unit: g/t
- Intercept: 3.1 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: 2016-01-19T00:00:00.000Z

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Historical high-grade intercept reported as context.

- Positive factor: high grade

Evidence · text

> 3.1m @ 5 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-15-282

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-drill-facts-3)

North Bullfrog · silver

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: NB-15-282
- Project: North Bullfrog
- Commodity: silver
- Region: usa\_nv
- Reported Region: usa\_nv
- Ticker: KOR

#### Geometry

- Grade: 42
- Grade Unit: g/t
- Intercept: 3.1 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: 2016-01-19T00:00:00.000Z

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Historical silver grade reported as context.

- Positive factor: high silver grade

Evidence · text

> 42 g/t Ag

#### 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-15-273

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-drill-facts-4)

North Bullfrog · gold

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: NB-15-273
- Project: North Bullfrog
- Commodity: gold
- Region: usa\_nv
- Reported Region: usa\_nv
- Ticker: KOR

#### Geometry

- Grade: 2.05
- Grade Unit: g/t
- Intercept: 3.1 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: 2016-01-26T00:00:00.000Z

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Historical intercept reported as context for the new program.

- Positive factor: deepest drilled at North Bullfrog

Evidence · text

> 3.1m @ 2.05 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-15-273

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-begins-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-drill-facts-5)

North Bullfrog · silver

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: NB-15-273
- Project: North Bullfrog
- Commodity: silver
- Region: usa\_nv
- Reported Region: usa\_nv
- Ticker: KOR

#### Geometry

- Grade: 178
- Grade Unit: g/t
- Intercept: 3.1 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: 2016-01-26T00:00:00.000Z

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Historical silver grade reported as context.

- Positive factor: high silver grade

Evidence · text

> 178 g/t Ag

#### 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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-6)

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:d9339d1e7038b98ce9c3

#### Resource Data

- Category: measured
- Tonnes: 3860000
- Grade: 2.55
- Grade Unit: g/t
- Contained Metal: 316500
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing measured resource for mill processing.

- Positive factor: measured category

Evidence · text

> measured mineral resource of 3.86 Mt at an average grade of 2.55 g/t gold

#### 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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-7)

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:d9339d1e7038b98ce9c3

#### Resource Data

- Category: measured
- Tonnes: 3860000
- Grade: 19.7
- Grade Unit: g/t
- Contained Metal: 2445000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing measured resource for mill processing.

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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-8)

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:120b0a757c9f6b09657b

#### Resource Data

- Category: indicated
- Tonnes: 1810000
- Grade: 1.53
- Grade Unit: g/t
- Contained Metal: 89100
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing indicated resource for mill processing.

- Positive factor: indicated category

Evidence · text

> indicated mineral resource of 1.81 Mt at an average grade of 1.53 g/t gold

#### 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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-9)

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:120b0a757c9f6b09657b

#### Resource Data

- Category: indicated
- Tonnes: 1810000
- Grade: 10.2
- Grade Unit: g/t
- Contained Metal: 593600
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing indicated resource for mill processing.

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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-10)

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:26171a2cb112f99d50cd

#### Resource Data

- Category: inferred
- Tonnes: 1480000
- Grade: 0.83
- Grade Unit: g/t
- Contained Metal: 39500
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing inferred resource for mill processing.

- Negative factor: inferred category

Evidence · text

> inferred resource of 1.48 Mt at an average grade of 0.83 g/t gold

#### 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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-11)

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:26171a2cb112f99d50cd

#### Resource Data

- Category: inferred
- Tonnes: 1480000
- Grade: 4.26
- Grade Unit: g/t
- Contained Metal: 202700
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing inferred resource for mill processing.

- Negative factor: inferred category

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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-12)

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:d92916fbef6f6d8f185e

#### Resource Data

- Category: measured
- Tonnes: 300000
- Grade: 0.25
- Grade Unit: g/t
- Contained Metal: 2400
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing measured resource for heap leach processing.

Evidence · text

> measured mineral resource of 0.3 Mt at an average grade of 0.25 g/t gold

#### 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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-13)

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:d92916fbef6f6d8f185e

#### Resource Data

- Category: measured
- Tonnes: 300000
- Grade: 2.76
- Grade Unit: g/t
- Contained Metal: 26600
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing measured resource for heap leach processing.

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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-14)

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:d372bde120cdd4535018

#### Resource Data

- Category: indicated
- Tonnes: 22860000
- Grade: 0.3
- Grade Unit: g/t
- Contained Metal: 220500
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing indicated resource for heap leach processing.

- Positive factor: indicated category

Evidence · text

> indicated mineral resource of 22.86 Mt at an average grade of 0.30 g/t gold

#### 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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-15)

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:d372bde120cdd4535018

#### Resource Data

- Category: indicated
- Tonnes: 22860000
- Grade: 0.43
- Grade Unit: g/t
- Contained Metal: 316100
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing indicated resource for heap leach processing.

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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-16)

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:2f1dbe5b04c0692165f3

#### Resource Data

- Category: inferred
- Tonnes: 176300000
- Grade: 0.19
- Grade Unit: g/t
- Contained Metal: 1077400
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing inferred resource for heap leach processing.

- Negative factor: inferred category

Evidence · text

> inferred mineral resource of 176.3 Mt at an average grade of 0.19 g/t gold

#### 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 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

**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-2016-phase-i-drill-program-north-bullfrog-project-nevada--2fa67d3b-82dd-4819-8303-e6b2d38403c5#fact-resource-facts-17)

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:2f1dbe5b04c0692165f3

#### Resource Data

- Category: inferred
- Tonnes: 176300000
- Grade: 0.67
- Grade Unit: g/t
- Contained Metal: 3799200
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-04-12T00:00:00.000Z

Reasoning: Part of the existing inferred resource for heap leach processing.

- Negative factor: inferred category

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 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

**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.