Results for tag: "Lead Mining"

Lead mining refers to the process of extracting lead ore from the earth. Lead is usually found in ore with zinc, silver, and (most abundantly) copper, and is extracted together with these metals. The main lead mineral is galena (PbS), which contains a large percentage of lead. The extraction of lead from ore involves two principal steps: mining the lead ore from underground or open-cut mines, and then smelting and refining the ore to separate the lead. The smelting process releases a number of by-products and often involves chemical reactions that separate the lead from other elements. Environmental concerns are associated with lead mining due to the toxicity of lead and the potential for pollution. Within the mining industry, lead is a valuable commodity used extensively in the manufacturing of batteries, particularly for vehicles, in pigments and protective coatings, in ammunition, and as a radiation shield in medical and scientific equipment. As lead is an essential component in these products, the mining of lead occupies an enduring niche in the minerals sector. Some companies operating within the lead mining market are BHP, Glencore, Nyrstar, Doe Run Company, Teck Resources Limited, Henan Yuguang Gold and Lead Co. Ltd., Hecla Mining Company, and Korea Zinc Co., Ltd. These companies are involved in lead extraction and production, some with integrated operations including mining, smelting, and refining. Show Less Read more