Sunshine Silver Mining & Refining Company is a U.S.-based materials company focused on silver and associated critical minerals. Headquartered in Kellogg, Idaho, it owns and develops the permitted Sunshine Mine in Idaho’s Silver Valley, a historic large-scale past-producing operation recognized as one of the highest-grade primary silver resources globally. The company also controls the nearby Sunshine Silver/Copper Refinery and associated infrastructure, including a tailings storage facility and historical antimony refinery grounds. Sunshine Silver Mining & Refining Company’s current activities center on advancing a vertically integrated mine-to-refinery platform designed to support onsite processing of silver and by-product metals such as antimony, copper, and lead. By concentrating its operations within a single prolific U.S. mining district, the company plays a specialized role in supplying silver and select critical minerals that are important to industrial, technology, and energy-related value chains. Founded in 2010, it operates within the broader materials and mining sector, serving smelters, refiners, and industrial end markets that rely on secure North American metal supply.