Companies that smelt and refine metals from ore or scrap, and make aluminum, non-metallic mineral, precious metal, steel, and other metal products.
Companies that engage in mining, mine site development, and preparing metallic minerals and nonmetallic minerals (including companies that operate mines and quarries for themselves or for others on a contract basis, companies that engage in quarrying, crushing, screening, washing, sizing, concentrating, and flotation of metals and nonmetallic minerals, and companies that provide support services for the mining industry).
Companies that explore, develop, mine, and process crushed and broken stone (such as, Basalt, limestone, sandstone, Boulder, marble, diabase, and other crushed stones), and companies that provide mineral preparation and support activities for such mining (including crushing, grinding, washing, screening, pulverizing, and sizing stones).
Companies that explore, develop, mine, and process industrial metals (including Iron, Copper, Nickel, Lead, and Zinc) and companies that provide industrial metals preparation and support services to industrial metals mining companies (such as screening, washing, sizing, and concentrating industrial metals).
Companies that engage in mining, mine site development, and preparing metallic and nonmetallic minerals. The industry includes companies that operate mines and quarries for themselves or for others on a contract basis.
Companies that reduce iron ore, operate steel foundries for smelting, rolling, forging, spinning, polishing of iron and steel products, convert iron into steel, manufacture ferro alloys, steel bars, plates, rods, sheets, strips and other primary forms of steel products.
Companies that explore, develop, mine, and process non-metallic minerals (such as stone, sand, gravel, clay, ceramic, and other non-metallic minerals) and companies that provide non-metallic minerals preparation and support activities for non-metallic minerals mining (including screening, washing, magnetic separation, and centrifugal separation of non-metallic minerals).