This industry comprises establishments primarily engaged in developing the mine site, mining, and/or beneficiating (i.e., preparing) metal ores (except iron and manganiferous ores valued for their iron content, gold ore, silver ore, copper, nickel, lead, and zinc ore). Developing the mine site, mining, and/or beneficiating iron and manganiferous ores valued chiefly for their iron content--are classified in Industry 212210, Iron Ore Mining; Developing the mine site, mining, and/or beneficiating ores valued chiefly for their gold or silver content--are classified in Industry 21222, Gold Ore and Silver Ore Mining; Developing the mine site, mining, and/or beneficiating ores valued chiefly for their copper, nickel, lead, or zinc content--are classified in Industry 21223, Copper, Nickel, Lead, and Zinc Mining; and Enriching uranium--are classified in Industry 32518, Other Basic Inorganic Chemical Manufacturing.