Hecla Mining Company, together with its subsidiaries, provides precious and base metal properties in the United States, Canada, Japan, Korea, and China. The company mines for silver, gold, lead, and zinc concentrates, as well as carbon material containing silver and gold for custom smelters, metal traders, and third-party processors; and doré containing silver and gold. It flagship project is the Greens Creek mine located on Admiralty Island in southeast Alaska. Hecla Mining Company was incorporated in 1891 and is headquartered in Coeur d'Alene, Idaho.