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 provides recycling services; including consumer and industrial waste.
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 specialize in performing business, consumer, environmental, and other activities for companies, households, or individuals in exchange for fees; and associations that promote the interests of their members including business and non-business associations or groups.
Companies that provide collection and treatment of both hazardous and solid waste, as well as remediation and waste management.
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.