For more than a century, the Sunshine Mine was one of the world’s greatest silver producers and the cornerstone asset of Idaho’s prolific silver valley.
Following its acquisition in 2010, Sunshine Silver Mining & Refining began a new chapter – expanding resources, growing the land package, modernizing infrastructure, and laying the groundwork for the Sunshine Complex to reemerge as North America’s premier silver and critical minerals hub.
➣ Acquired the Sunshine Mine Complex
➣ Consolidated land position with additional surface rights
➣ Discovered the Sunshine Vein Extension and West Chance Link Vein
➣ Identified the Yankee Boy Split and #10 Vein
➣ Acquired the Big Creek Refinery
➣ Purchased adjacent mineral rights from U.S. Silver
➣ Steinert Global ore sorting study confirmed potential to significantly increase feed grade through modern technology
➣ Completed major exploration drilling program, expanding known resources and identifying new veins
➣ Issued updated NI 43-101 Mineral Resource Estimate (MRE)
➣ Completed a new NI 43-101 Preliminary Economic Assessment (PEA)
➣ Commenced Feasibility study for restart of mine and mill
➣ Purchase new mobile mining fleet for development
➣ Drive development drifts to support further exploration and resource drilling
➣ Commence exploration and infill drilling programs
➣ Advance re-activation plan to restart production by 2028
➣ Replace double-drum hoist
➣ Complete infill drilling
➣ Undertake metallurgical testing
➣ Update Mineral Resource Estimate
➣ Complete Feasibility Study in Q1 2027
➣ Commence construction of mill
➣ Further underground development and underground mine infrastructure upgrades
➣ Construction of antimony plant
➣ Upgrade of refinery
➣ Q4 2028 Commence production
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