# Winshear Portsoy Project – Successful Metallurgical Testwork Produces Marketable Copper and Highly Attractive Nickel Concentrates

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/winshear-portsoy-project-successful-metallurgical-testwork-produces-marketable-c--88a92bf0-c17a-4cfb-8d6c-67a4087e4f14

Original source: https://www.globenewswire.com/news-release/2026/07/27/3333401/0/en/winshear-portsoy-project-successful-metallurgical-testwork-produces-marketable-copper-and-highly-attractive-nickel-concentrates.html

Publisher: globenewswire

Original announcement: 2026-07-27T00:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Winshear Metals Corp.

- Ticker: WINS

- Exchange: Unavailable

- Region: NE Scotland

- Primary commodity: Nickel

- Secondary commodities: Copper, Cobalt

- Document categories: Metallurgy

- Extracted: 2026-08-20 19:48:03 UTC

Narrative sentiment: 0.70 · Bullish

## Minestarters Atlas summary

Winshear Metals Corp. reported successful batch metallurgical testwork at the Portsoy Project in Scotland, producing marketable copper and high-grade nickel concentrates. The results demonstrate the amenability of the Rodburn Target mineralization to conventional sequential flotation.

Reasoning: First-ever metallurgical testwork on the project shows promising recovery and concentrate quality using conventional flotation.

- Positive factor: successful production of marketable concentrates

- Positive factor: high nickel concentrate grade

- Positive factor: low nickel penalty risk in copper concentrate

- Positive factor: QP sign-off provided

- Negative factor: batch scale testing only

- Negative factor: recoveries are expected ranges rather than absolute values

Facts used in scoring: 7

## Classification and evidence

**Bench Scale Only**

Polarity: negative

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

Why it applies: Testwork was conducted using batch tests rather than locked-cycle or pilot scale.

Evidence · text

> Based on the batch tests

**Mill Route**

Polarity: neutral

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

Why it applies: The objective was to determine amenability to conventional sequential flotation methods.

Evidence · text

> respond to conventional sequential flotation methods

**QP/CP Signed**

Polarity: positive

Story-specific tag

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: J. Patricio Varas, P.Geo. and Tony Tran, P.Eng. have read and approved the technical disclosure.

Evidence · text

> Qualified Person J. Patricio Varas, P.Geo... has read and approved all technical and scientific information

## Extracted facts

Stored fact records: 7. Some facts used in scoring do not have a stored record.

## Metallurgical Results (7)

### batch flotation

[Link to this fact](https://atlas-staging.minestarters.com/news/winshear-portsoy-project-successful-metallurgical-testwork-produces-marketable-c--88a92bf0-c17a-4cfb-8d6c-67a4087e4f14#fact-metallurgical-facts-0)

copper

#### Identity

- Commodity: copper
- Ticker: WINS

#### Test Work

- Program Status: preliminary
- Test Type: batch flotation
- Sample: composite sample of massive to disseminated sulphide mineralisation from drill holes completed in 2023 / 2024

#### Recovery

- Recovery: 77.5 %
- Recovery Basis: actual\_test
- Head Grade: 0.82
- Head Grade Unit: %

#### Lab

- Laboratory: Blue Coast Research Ltd

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-07-27T00:00:00.000Z

Reasoning: Head grade of 0.82% Cu with expected recoveries of 75-80%.

- Positive factor: marketable concentrate grade

- Negative factor: batch scale only

Evidence · text

> Head assays were 0.82% copper... copper recoveries of 75-80% and nickel of 60-65% can be expected.

### batch flotation

[Link to this fact](https://atlas-staging.minestarters.com/news/winshear-portsoy-project-successful-metallurgical-testwork-produces-marketable-c--88a92bf0-c17a-4cfb-8d6c-67a4087e4f14#fact-metallurgical-facts-1)

nickel

#### Identity

- Commodity: nickel
- Ticker: WINS

#### Test Work

- Program Status: preliminary
- Test Type: batch flotation
- Sample: composite sample of massive to disseminated sulphide mineralisation from drill holes completed in 2023 / 2024

#### Recovery

- Recovery: 62.5 %
- Recovery Basis: actual\_test
- Head Grade: 1.64
- Head Grade Unit: %

#### Lab

- Laboratory: Blue Coast Research Ltd

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-07-27T00:00:00.000Z

Reasoning: Head grade of 1.64% Ni with expected recoveries of 60-65% and high concentrate grades.

- Positive factor: high concentrate grade

- Positive factor: attractive to smelters

- Negative factor: batch scale only

Evidence · text

> Head assays were... 1.64% nickel... nickel of 60-65% can be expected.

### Fact 3

[Link to this fact](https://atlas-staging.minestarters.com/news/winshear-portsoy-project-successful-metallurgical-testwork-produces-marketable-c--88a92bf0-c17a-4cfb-8d6c-67a4087e4f14#fact-metallurgical-facts-2)

cobalt

#### Identity

- Commodity: cobalt
- Ticker: WINS

#### Test Work

- Sample: composite sample of massive to disseminated sulphide mineralisation from drill holes completed in 2023 / 2024

#### Recovery

- Head Grade: 0.11
- Head Grade Unit: %

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-07-27T00:00:00.000Z

Reasoning: Head grade of 0.11% Co reported as part of the composite.

Evidence · text

> Head assays were... 0.11% cobalt.

### Fact 4

[Link to this fact](https://atlas-staging.minestarters.com/news/winshear-portsoy-project-successful-metallurgical-testwork-produces-marketable-c--88a92bf0-c17a-4cfb-8d6c-67a4087e4f14#fact-metallurgical-facts-3)

nickel

#### Identity

- Commodity: nickel
- Ticker: WINS

#### Test Work

- Sample: Nickel concentrate

#### Recovery

- Conc. Grade: 15
- Conc. Grade Unit: %

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-07-27T00:00:00.000Z

Reasoning: Produced nickel concentrate grades of 14-16%.

- Positive factor: highly attractive concentrate grade

Evidence · text

> Nickel concentrate grades of 14-16% were produced

### Fact 5

[Link to this fact](https://atlas-staging.minestarters.com/news/winshear-portsoy-project-successful-metallurgical-testwork-produces-marketable-c--88a92bf0-c17a-4cfb-8d6c-67a4087e4f14#fact-metallurgical-facts-4)

cobalt

#### Identity

- Commodity: cobalt
- Ticker: WINS

#### Test Work

- Sample: Nickel concentrate

#### Recovery

- Conc. Grade: 1
- Conc. Grade Unit: %

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-07-27T00:00:00.000Z

Reasoning: Nickel concentrate included in excess of 1% cobalt.

Evidence · text

> included in excess of 1% cobalt.

### Fact 6

[Link to this fact](https://atlas-staging.minestarters.com/news/winshear-portsoy-project-successful-metallurgical-testwork-produces-marketable-c--88a92bf0-c17a-4cfb-8d6c-67a4087e4f14#fact-metallurgical-facts-5)

copper

#### Identity

- Commodity: copper
- Ticker: WINS

#### Test Work

- Sample: Nickel concentrate

#### Recovery

- Conc. Grade: 0.54
- Conc. Grade Unit: %

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-07-27T00:00:00.000Z

Reasoning: Nickel concentrate contained 0.54% copper which would be payable.

- Positive factor: payable content

Evidence · text

> The nickel concentrate contained 0.54% copper which would be payable.

### Fact 7

[Link to this fact](https://atlas-staging.minestarters.com/news/winshear-portsoy-project-successful-metallurgical-testwork-produces-marketable-c--88a92bf0-c17a-4cfb-8d6c-67a4087e4f14#fact-metallurgical-facts-6)

copper

#### Identity

- Commodity: copper
- Ticker: WINS

#### Test Work

- Sample: Copper concentrate

#### Recovery

- Conc. Grade: 25
- Conc. Grade Unit: %

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-07-27T00:00:00.000Z

Reasoning: Copper concentrate grades of ~25% with <1% nickel content.

- Positive factor: low penalty risk

Evidence · text

> Copper concentrate grades of ~25% with <1% nickel content

## 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.