Weekly Recap: Roast tests, acid revenue and Vortex/Brimstone rigs

Hycroft Mining Holding Corporation Class A (NASDAQ:HYMC) said successful metallurgical roast tests — which could add sulfuric acid revenue — and a trade—off versus pressure oxidation support accelerating drilling at Vortex and Brimstone, extra target tests and two Q4 2026 core rigs under a strength…