72021 - Contractors and supervisors, heavy equipment operator crews

Contractors and supervisors of heavy equipment operator crews supervise and coordinate the activities of workers classified in the following unit groups: Crane operators (72500), Water well drillers (72501), Heavy equipment operators (73400), Drillers and blasters - surface mining, quarrying and construction (73402), Railway yard and track maintenance workers (74200), Public works maintenance equipment operators and related workers (74205), Longshore workers (75100), Material handlers (75101), and Public works and maintenance labourers (75212). They are employed in a wide range of establishments; places of employment are indicated in the above unit group descriptions. Contractors may be self-employed.