Hecla Mining Company
Hecla Mining Company, together with its subsidiaries, provides precious and base metals 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. Its flagship project is the Greens Creek mine located on Admiralty Island in southeast Alaska. The company was incorporated in 1891 and is headquartered in Coeur d'Alene, Idaho.
Open HL dashboard ↗United States Antimony Corporation
United States Antimony Corporation produces and sells antimony, zeolite, and precious metals in the United States and Canada. It operates in two segments: Antimony and Zeolite. The company offers antimony oxide that is primarily used in conjunction with a halogen to form a synergistic flame retardant system for plastics, rubber, fiberglass, textile goods, paints, coatings, and paper, as well as color fastener in paints and as a phosphorescent agent in fluorescent light bulbs; antimony trisulfide used as a primer in ammunition; and antimony metal for use in bearings, storage batteries, and ordnance. The company also offers coarse and fine zeolite for soil amendment and fertilizer, water filtration, sewage treatment, nuclear waste and other environmental cleanup, odor control, gas separation, and animal nutrition applications, as well as in catalysts, petroleum refining, concrete, solar energy and heat exchange, desiccants, pellet binding, horse and kitty litter, traction control, ammonia removal from mining waste, and floor cleaners; carriers for insecticides, pesticides, and herbicides. In addition, it recovers unrefined and refined gold and silver. The company was founded in 1968 and is based in Dallas, Texas.
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