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 provide construction services including architectural and engineering services contractors, civil engineering contractors, integrated contractors, manufactured buildings suppliers, reclamation and dredging contractors, specialty contracting traders, and providers of other construction services.
Companies that provide construction services including general and specialty construction contracting, development, design, engineering, and other services in addition to companies that invest in the construction sector
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 provide specific services related to construction but are not responsible for full projects. The services include renovation, rehabilitation, exterior works, plumbing, building finishing (painting, flooring, insulation), and other specialty works (glass work, steel fitting, and others).