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 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 provide electric power, natural gas, steam supply, water supply, and sewage removal through a permanent infrastructure of lines, mains, and pipes.
Companies that operate power plants for converting fossil fuel into electric power; including generation facilities that use fossil fuels (such as coal, oil, or gas) to produce electric energy; electric energy is then provided to electric power transmission or electric power distribution systems.
Companies that operate facilities for electric power generation, so as to convert forms of energy (including hydroelectric, fossil fuels, and nuclear power) into electrical energy. The sector includes companies that produce electric energy and provide electricity to transmission systems or to distribution systems.
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 operate electric power distribution systems (such as lines, poles, meters, and wiring) that carry electricity to wholesale or retail customers, and companies that act as electric power brokers and agents and arrange the sale of electricity via power distribution systems operated by others.
Companies that engage in the generation, transmission, and distribution of electricity for sale in regulated markets.