# Corvus Gold Outlines 2016 Exploration Program to Build on New Discoveries from 2015 at the North Bullfrog Project, NV

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2

Original source: https://money.tmx.com/en/quote/KOR/news/72167821/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2

Publisher: tmx

Original announcement: 2016-02-23T13:00:00.000Z

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 07:42:55 UTC

Narrative sentiment: 0.60 · Bullish

## Minestarters Atlas summary

Corvus Gold Inc. has outlined its 2016 exploration program for the North Bullfrog Project in Nevada, focusing on following up new high-grade gold discoveries from the 2015 drill program. The initial phase will include approximately 5,000 metres of drilling to delineate targets such as NW Sierra Blanca, Rhyolite & YellowJacket Extension, Savage, and North Jolly Jane. The project also hosts significant NI 43-101 compliant gold-silver mineral resources for both oxide mill and heap leach processing, with an effective date of June 16, 2015.

Reasoning: Corvus Gold is outlining a 2016 exploration program to follow up on promising 2015 drill discoveries, including high-grade gold intercepts, and to expand its existing NI 43-101 compliant gold-silver resource at the North Bullfrog Project in Nevada.

- Positive factor: New high-grade gold discoveries identified from 2015 drilling

- Positive factor: Planned 5,000-metre follow-up drill program for 2016

- Positive factor: Significant existing NI 43-101 compliant gold-silver resource base

- Positive factor: Strong QA/QC procedures disclosed with certified lab and QP sign-off

- Negative factor: Highlighted drill results are historical from 2015

- Negative factor: Resource estimate effective date is from mid-2015, not current

- Negative factor: Exploration program is a plan, not yet executed

Facts used in scoring: 21

## 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 QA/QC procedures including the use of certified reference materials, blanks, duplicates, and an ISO-certified laboratory \(ALS Chemex\) with third-party checks.

Evidence · text

> Quality control is monitored by the insertion of blind certified standard reference materials and blanks into each sample shipment. All resource sample shipments are sealed and shipped to ALS Chemex in Reno, Nevada , for preparation and then on to ALS Chemex in Reno, Nevada , or Vancouver, B.C. , for assaying. ALS Chemex's quality system complies with the requirements for the International Standards ISO 9001:2000 and ISO 17025:1999. Analytical accuracy and precision are monitored by the analysis of reagent blanks, reference material and replicate samples. Finally, representative blind duplicate samples are forwarded to ALS Chemex and an ISO compliant third party laboratory for additional quality control.

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: The drill results highlighted in the document are explicitly stated as 'new discoveries from 2015 drill program', indicating they are not new assays from this announcement date.

Evidence · text

> new discoveries from 2015 at the North Bullfrog Project

**Step-Out Extension**

Polarity: positive

Definition: Mineralization extended beyond the previously known limit.

Why it applies: Drilling and exploration modeling in 2015 extended the disseminated low-grade system several hundred metres to the west at the NW Sierra Blanca target.

Evidence · text

> Drilling and exploration modeling in 2015 has now extended the disseminated low-grade system several hundred metres to the west

**Bonanza Intercept**

Polarity: positive

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

Why it applies: The intercept of 3.1 metres of 5 g/t gold exceeds the exceptional threshold of 5 g/t for open pit gold deposits.

Evidence · text

> 3.1 metres of 5 g/t gold

**NI 43-101 Compliant**

Polarity: positive

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

Why it applies: All resource estimates are stated to be prepared in accordance with NI 43-101 and CIM 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

**QP/CP Signed**

Polarity: positive

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

Why it applies: Jeffrey A. Pontius and Carl E. Brechtel, both Qualified Persons as defined by NI 43-101, have supervised and approved the disclosure.

Evidence · text

> Jeffrey A. Pontius \(CPG 11044\), a qualified person as defined by National Instrument 43-101, has supervised the preparation of the scientific and technical information that forms the basis for this news release and has approved the disclosure herein. Mr. Pontius is not independent of Corvus, as he is the CEO & President and holds common shares and incentive stock options. Carl E. Brechtel , \(Nevada PE 008744 and Registered Member 353000 of SME\), a qualified person as defined by National Instrument 43-101, has coordinated execution of the work outlined in this news release and has approved the disclosure herein.

**Measured Resource**

Polarity: positive

Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: The document reports a 'measured mineral resource' for both mill and heap leach processing.

Evidence · text

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

**Indicated Resource**

Polarity: positive

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

Why it applies: The document reports an 'indicated mineral resource' for both mill and heap leach processing.

Evidence · text

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

**Inferred Resource**

Polarity: negative

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

Why it applies: The document reports an 'inferred resource' for both mill and heap leach processing.

Evidence · text

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

**Cut-off Disclosed**

Polarity: positive

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

Why it applies: The breakeven cut-off grades for both mill and heap leach processing are clearly stated.

Evidence · text

> breakeven cut-off grade of 0.52 g/t gold

**Stale Estimate**

Polarity: negative

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

Why it applies: The mineral resource estimates are dated June 16, 2015, making them over six months old at the time of this February 2016 announcement.

Evidence · text

> dated June 16, 2015

**PEA-Supporting**

Polarity: neutral

Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: The resource estimates are presented in the context of a 'Preliminary Economic Assessment \(PEA\) released last year'.

Evidence · text

> Preliminary Economic Assessment \(PEA\) released last year

## Extracted facts

Stored fact records: 21. Some facts used in scoring do not have a stored record.

## Drill Results (9)

### NB-15-282

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-drill-facts-0)

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
- Mining Method: open\_pit

#### QA/QC

- Laboratory: ALS Chemex
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This historical intercept shows exceptional gold grade in a new discovery area, indicating strong potential for the project, despite being from a prior drill program.

- Positive factor: High-grade gold intercept \(5 g/t Au\) exceeds exceptional threshold for open pit gold

- Positive factor: Intercept is part of a new potential high-grade discovery

- Negative factor: Result is historical from 2015 drill program

Evidence · text

> 3.1 metres of 5 g/t gold and 42.0 g/t silver \(Hole NB-15-282\)

#### 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 initial thrust of the 2016 program will be to follow-up on a new potential high-grade gold discovery adjacent to the"

### NB-15-282

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-drill-facts-1)

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
- Mining Method: open\_pit

#### QA/QC

- Laboratory: ALS Chemex
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This historical intercept shows a good silver grade, contributing to the polymetallic potential of the new discovery area.

- Positive factor: Significant silver grade alongside high-grade gold

- Negative factor: Result is historical from 2015 drill program

Evidence · text

> 3.1 metres of 5 g/t gold and 42.0 g/t silver \(Hole NB-15-282\)

#### 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 initial thrust of the 2016 program will be to follow-up on a new potential high-grade gold discovery adjacent to the"

### NB-15-269

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-drill-facts-2)

North Bullfrog · gold

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: NB-15-269
- Project: North Bullfrog
- Commodity: gold
- Region: usa\_nv
- Reported Region: usa\_nv
- Ticker: KOR

#### Geometry

- Grade: 1.3
- Grade Unit: g/t
- Intercept: 20 m

#### Classification

- Sample Type: drill
- Mining Method: open\_pit

#### QA/QC

- Laboratory: ALS Chemex
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This historical intercept shows a moderate gold grade over a good width, indicating potential for bulk tonnage mineralization in a new discovery area.

- Positive factor: Moderate gold grade over a significant width \(20m\)

- Positive factor: Intercept is part of a new potential high-grade discovery

- Negative factor: Result is historical from 2015 drill program

Evidence · text

> 20 metres of 1.3 g/t gold and 1.8 g/t silver \(Hole NB-15-269\)

#### 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 initial thrust of the 2016 program will be to follow-up on a new potential high-grade gold discovery adjacent to the"

### NB-15-269

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-drill-facts-3)

North Bullfrog · silver

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: NB-15-269
- Project: North Bullfrog
- Commodity: silver
- Region: usa\_nv
- Reported Region: usa\_nv
- Ticker: KOR

#### Geometry

- Grade: 1.8
- Grade Unit: g/t
- Intercept: 20 m

#### Classification

- Sample Type: drill
- Mining Method: open\_pit

#### QA/QC

- Laboratory: ALS Chemex
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This historical intercept shows a low silver grade, but contributes to the overall polymetallic nature of the mineralization.

- Negative factor: Silver grade is low

- Negative factor: Result is historical from 2015 drill program

Evidence · text

> 20 metres of 1.3 g/t gold and 1.8 g/t silver \(Hole NB-15-269\)

#### 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 initial thrust of the 2016 program will be to follow-up on a new potential high-grade gold discovery adjacent to the"

### NB-15-267

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-drill-facts-4)

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: 3.5
- Grade Unit: g/t
- Intercept: 10.7 m

#### Classification

- Sample Type: drill
- Mining Method: open\_pit

#### QA/QC

- Laboratory: ALS Chemex
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This historical intercept shows a strong gold grade over a good width, indicating potential for high-grade stockwork mineralization in the Rhyolite-YellowJacket extension.

- Positive factor: Strong gold grade over a good width

- Positive factor: Intercept indicates high-grade stockwork type mineralization

- Negative factor: Result is historical from 2015 drill program

Evidence · text

> 10.7m @ 3.5 g/t gold \[NB-15-267\]

#### 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 initial thrust of the 2016 program will be to follow-up on a new potential high-grade gold discovery adjacent to the"

### NB-15-266

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-drill-facts-5)

North Bullfrog · gold

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: NB-15-266
- Project: North Bullfrog
- Commodity: gold
- Region: usa\_nv
- Reported Region: usa\_nv
- Ticker: KOR

#### Geometry

- Grade: 1.9
- Grade Unit: g/t
- Intercept: 6.1 m

#### Classification

- Sample Type: drill
- Mining Method: open\_pit

#### QA/QC

- Laboratory: ALS Chemex
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This historical intercept shows a moderate gold grade over a reasonable width, indicating potential for high-grade stockwork mineralization in the Rhyolite-YellowJacket extension.

- Positive factor: Moderate gold grade over a reasonable width

- Positive factor: Intercept indicates high-grade stockwork type mineralization

- Negative factor: Result is historical from 2015 drill program

Evidence · text

> 6.1m @ 1.9 g/t gold \[NB-15-266\]

#### 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 initial thrust of the 2016 program will be to follow-up on a new potential high-grade gold discovery adjacent to the"

### NB-15-273

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-drill-facts-6)

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
- Mining Method: open\_pit

#### QA/QC

- Laboratory: ALS Chemex
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This historical intercept shows a strong gold grade over a narrow width, suggesting a deeper, higher-grade intrusive related mineralization at the Savage target.

- Positive factor: Strong gold grade over a narrow width

- Positive factor: Intercept indicates deeper, higher-grade intrusive related mineralization

- Negative factor: Result is historical from 2015 drill program

Evidence · text

> NB-15-273 with 3.1m @ 2.05 g/t gold, 178 g/t silver and up to 0.2% copper

#### 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 initial thrust of the 2016 program will be to follow-up on a new potential high-grade gold discovery adjacent to the"

### NB-15-273

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-drill-facts-7)

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
- Mining Method: open\_pit

#### QA/QC

- Laboratory: ALS Chemex
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This historical intercept shows a high silver grade, contributing to the polymetallic nature of the deeper mineralization at the Savage target.

- Positive factor: High silver grade alongside gold and copper

- Positive factor: Intercept indicates deeper, higher-grade intrusive related mineralization

- Negative factor: Result is historical from 2015 drill program

Evidence · text

> NB-15-273 with 3.1m @ 2.05 g/t gold, 178 g/t silver and up to 0.2% copper

#### 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 initial thrust of the 2016 program will be to follow-up on a new potential high-grade gold discovery adjacent to the"

### NB-15-273

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-drill-facts-8)

North Bullfrog · copper

Historical result

Needs review: historical\_restatement

#### Identity

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

#### Geometry

- Grade: 0.2
- Grade Unit: %
- Intercept: 3.1 m

#### Classification

- Sample Type: drill
- Mining Method: open\_pit

#### QA/QC

- Laboratory: ALS Chemex
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks, duplicates

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This historical intercept shows a weak copper grade, but its presence alongside gold and silver suggests polymetallic potential in the deeper mineralization at Savage.

- Positive factor: Presence of copper indicates polymetallic potential

- Negative factor: Copper grade is weak for a porphyry deposit

- Negative factor: Result is historical from 2015 drill program

Evidence · text

> NB-15-273 with 3.1m @ 2.05 g/t gold, 178 g/t silver and up to 0.2% copper

#### 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 initial thrust of the 2016 program will be to follow-up on a new potential high-grade gold discovery adjacent to the"

## Resource Estimates (12)

### measured

[Link to this fact](https://atlas-extractions.minestarters.com/news/corvus-gold-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:887e56c52d3411a2ecdf
- Material type: oxide

#### Resource Data

- Category: measured
- Tonnes: 3860000
- Grade: 2.55
- Grade Unit: g/t
- Contained Metal: 316.5
- Contained Unit: koz
- Cutoff Grade: 0.52
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This Measured resource for oxide mill processing shows high confidence and strong gold grades, forming a solid base for the project, though the estimate is historical.

- Positive factor: High confidence Measured category resource

- Positive factor: Strong gold grade for an open pit oxide resource

- Positive factor: Significant contained gold ounces

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:887e56c52d3411a2ecdf
- Material type: oxide

#### Resource Data

- Category: measured
- Tonnes: 3860000
- Grade: 19.7
- Grade Unit: g/t
- Contained Metal: 2445
- Contained Unit: koz
- Cutoff Grade: 0.52
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This Measured resource for oxide mill processing includes a good silver grade and significant contained ounces, adding value to the project, though the estimate is historical.

- Positive factor: High confidence Measured category resource

- Positive factor: Significant contained silver ounces

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:7f3838bc63f684bc656c
- Material type: oxide

#### Resource Data

- Category: indicated
- Tonnes: 1810000
- Grade: 1.53
- Grade Unit: g/t
- Contained Metal: 89.1
- Contained Unit: koz
- Cutoff Grade: 0.52
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This Indicated resource for oxide mill processing shows good confidence and moderate gold grades, contributing to the overall project potential, though the estimate is historical.

- Positive factor: Good confidence Indicated category resource

- Positive factor: Moderate gold grade for an open pit oxide resource

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:7f3838bc63f684bc656c
- Material type: oxide

#### Resource Data

- Category: indicated
- Tonnes: 1810000
- Grade: 10.2
- Grade Unit: g/t
- Contained Metal: 593.6
- Contained Unit: koz
- Cutoff Grade: 0.52
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This Indicated resource for oxide mill processing includes a good silver grade and contained ounces, adding value to the project, though the estimate is historical.

- Positive factor: Good confidence Indicated category resource

- Positive factor: Significant contained silver ounces

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:a52e374d48449116ee00
- Material type: oxide

#### Resource Data

- Category: inferred
- Tonnes: 1480000
- Grade: 0.83
- Grade Unit: g/t
- Contained Metal: 39.5
- Contained Unit: koz
- Cutoff Grade: 0.52
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This Inferred resource for oxide mill processing provides additional potential but with lower confidence due to its category and historical nature.

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Inferred category has lower geological confidence

- Negative factor: Gold grade is moderate for an open pit oxide resource

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:a52e374d48449116ee00
- Material type: oxide

#### Resource Data

- Category: inferred
- Tonnes: 1480000
- Grade: 4.26
- Grade Unit: g/t
- Contained Metal: 202.7
- Contained Unit: koz
- Cutoff Grade: 0.52
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This Inferred resource for oxide mill processing includes a low silver grade, providing additional potential but with lower confidence due to its category and historical nature.

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Inferred category has lower geological confidence

- Negative factor: Silver grade is low

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-resource-facts-15)

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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:29a91c844ecc413c082d
- Material type: oxide

#### Resource Data

- Category: measured
- Tonnes: 300000
- Grade: 0.25
- Grade Unit: g/t
- Contained Metal: 2.4
- Contained Unit: koz
- Cutoff Grade: 0.15
- Cutoff Unit: g/t

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This Measured resource for oxide heap leach processing shows high confidence and an economic gold grade, suitable for low-cost extraction, though the estimate is historical.

- Positive factor: High confidence Measured category resource

- Positive factor: Gold grade is economic for heap leach processing

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-resource-facts-16)

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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:29a91c844ecc413c082d
- Material type: oxide

#### Resource Data

- Category: measured
- Tonnes: 300000
- Grade: 2.76
- Grade Unit: g/t
- Contained Metal: 26.6
- Contained Unit: koz
- Cutoff Grade: 0.15
- Cutoff Unit: g/t

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This Measured resource for oxide heap leach processing includes a low silver grade, but contributes to the overall contained metal, though the estimate is historical.

- Positive factor: High confidence Measured category resource

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Silver grade is low

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-resource-facts-17)

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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:8ea52fc71cc575c91c7e
- Material type: oxide

#### Resource Data

- Category: indicated
- Tonnes: 22860000
- Grade: 0.3
- Grade Unit: g/t
- Contained Metal: 220.5
- Contained Unit: koz
- Cutoff Grade: 0.15
- Cutoff Unit: g/t

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This Indicated resource for oxide heap leach processing shows good confidence and economic gold grades over a large tonnage, providing substantial potential, though the estimate is historical.

- Positive factor: Good confidence Indicated category resource

- Positive factor: Economic gold grade for heap leach processing

- Positive factor: Significant contained gold ounces

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-resource-facts-18)

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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:8ea52fc71cc575c91c7e
- Material type: oxide

#### Resource Data

- Category: indicated
- Tonnes: 22860000
- Grade: 0.43
- Grade Unit: g/t
- Contained Metal: 316.1
- Contained Unit: koz
- Cutoff Grade: 0.15
- Cutoff Unit: g/t

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This Indicated resource for oxide heap leach processing includes a low silver grade, but contributes to the overall contained metal, though the estimate is historical.

- Positive factor: Good confidence Indicated category resource

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Silver grade is low

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-resource-facts-19)

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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:a9dc80dcbf3b9e9af88c
- Material type: oxide

#### Resource Data

- Category: inferred
- Tonnes: 176300000
- Grade: 0.19
- Grade Unit: g/t
- Contained Metal: 1077.4
- Contained Unit: koz
- Cutoff Grade: 0.15
- Cutoff Unit: g/t

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This large Inferred resource for oxide heap leach processing provides significant long-term potential, despite its lower confidence category and historical nature.

- Positive factor: Very large tonnage for heap leach processing

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Inferred category has lower geological confidence

- Negative factor: Gold grade is weak for an open pit oxide resource

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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-outlines-2016-exploration-program-to-build-on-new-discoveries-from-2--71898fb2-4ade-4612-a992-e34bceba02d2#fact-resource-facts-20)

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
- QP Signed: Yes
- Qualified person names: Jeffrey A. Pontius, Carl E. Brechtel
- Resource group id: resource:a9dc80dcbf3b9e9af88c
- Material type: oxide

#### Resource Data

- Category: inferred
- Tonnes: 176300000
- Grade: 0.67
- Grade Unit: g/t
- Contained Metal: 3799.2
- Contained Unit: koz
- Cutoff Grade: 0.15
- Cutoff Unit: g/t

#### Prior Estimate

- Resource Date: 2015-06-16

#### Lab

- Laboratory: ALS Chemex

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2016-02-23T00:00:00.000Z

Reasoning: This large Inferred resource for oxide heap leach processing includes significant contained silver, providing additional long-term potential, despite its lower confidence category and historical nature.

- Positive factor: Very large contained silver ounces

- Positive factor: NI 43-101 compliant with QP sign-off

- Negative factor: Inferred category has lower geological confidence

- Negative factor: Silver grade is low

- Negative factor: Estimate is historical \(effective date June 2015\)

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

**QP/CP Signed**

Polarity: positive

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

Why it applies: qp\_signed is true

**NI 43-101 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.