This major group comprises occupations in industrial, electrical and construction trades, which usually require three or more years of apprenticeship, or several years of work experience in the trade combined with related high school, college or industry courses. It includes occupations in machining, metal forming, shaping and erecting trades; electrical trades and electrical power line and telecommunications workers; plumbers, pipefitters and gas fitters; carpenters and cabinetmakers; masonry and plastering trades; and other construction trades, as well as related supervisors and contractors.
