Winshear Metals says Portsoy testwork yields marketable copper, nickel concentrates

• Winshear Metals reported initial metallurgy at the Portsoy project’s Rodburn target in Scotland, producing saleable copper and nickel concentrates via conventional flotation.
• Composite head grades measured 0.82% copper, 1.64% nickel, 0.11% cobalt; batch tests indicated 75%-80% copper recovery, 60%-65% nickel recovery.
• Nickel concentrate graded 14%-16% nickel with over 1% cobalt; copper in the nickel concentrate measured 0.54%.
• Copper concentrate graded about 25% copper with under 1% nickel, below typical nickel penalty thresholds.
• Locked-cycle studies are planned to target higher recoveries as project evaluation advances.

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