2022 Investor Presentation

LANNISTER MINING | 2022 INVESTOR PRESENTATION PRODUCTION SCENARIOS Abundant smelting capacity in Western US. Lannister is evaluating production of concentrate as well as non-cyanide flowsheet designs. Cyanide processing of ore from new Montana O/P mines was narrowly banned statewide in 1998 (53% to 47% vote) following operator negligence and a low gold price. • However, new underground mines are permitted to use cyanide to extract ore. Expected process is the shipping of a high grade gold concentrate. Also evaluating potential for other non-cyanide processing alternatives (e.g. Barrick's non- cyanide thiosulphate process at Goldstrike). Concentrate testing (gravity/floatation etc) in progress. 500 mile Thompson Falls Smelter WASHINGTON OREGON radius MONTANA NORTH DAKOTA LANNISTER MINING Columbus Smelter SOUTH DAKOTA Diamond Creek Smelter IDAHO Twin Creeks Autoclave WYOMING Goldstrike Autoclave & Roaster NEBRASKA Gold Quarry Roaster Garfield Smelter NEVADA UTAH CALIFORNIA COLORADO KANSAS ARIZONA OKLAHOMA NEW MEXICO Source: SNL Metals & Mining. Hayden Smelter San Manuel Smelter TEXAS 19

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