Lead and Zinc - Department of Energy Energy and Environmental Profile of the U.S. Mining Industry Lead and Zinc Ore Milling Treatment of lead and zinc ores begins with milling. Analysis: China scrap usage to displace 50 million mt ore ... At the same time, higher ferrous scrap generation and usage could displace some 50 million mt/year of iron ore, or 5% of import volume, as the move toward a greener steel sector brings a structural shift, with some blast furnace and oxygen route steelmaking capacity replaced by scrap-using electric-arc furnaces. Bauxite mining's unhealthy effects on people, . Bauxite is a rock that is mainly composed of various minerals. Most importantly, bauxite is the primary ore for aluminum. Aluminum is a very crucial element as its uses are varied and diverse - such as its usage in transportation, items, packaging, power lines, and construction.    Read More

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