Contango Silver & Gold Inc.
For the period ended Sep 22, 2026. Filed Sep 22, 2026.
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Sep 22, 2026 · Filed Sep 22, 2026
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CTGO$15.55+4.5%Stored close · as of Nov 6, 2026
Contents
EX-99.3 · Phase 2 - Variability and Flowsheet Optimization
Phase 2 - Variability and Flowsheet Optimization
| · | Complete variability testing by deposit, lithology, grade range, mineralized domain, alteration intensity, sulphide assemblage, oxidation state, and spatial location. |
| · | Optimize lead-zinc separation, especially for Dolly Varden, Homestake Silver, Wolf, and Kitsol, and determine whether zinc concentrate production has economic value in each domain or requires blending. |
| · | Optimize cyanidation parameters, including grind size, residence time, cyanide concentration, oxygenation, pre-aeration, pH control, lead nitrate or other additives, and detoxification requirements. |
| · | Evaluate combined flotation plus tailings cyanidation under integrated conditions rather than as isolated batch tests. |
| · | Investigate pre-concentration or ore sorting potential where large grade swings exist within mineralized intervals, particularly where indicated by the Kitsol sample selection review. |
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