Contractors and supervisors, trades and related workers
A. Machinists, machining and tooling inspectors, and tool and die makers
B. Electricians, electrical power line and cable workers, telecommunication line/cable workers and installation/repair workers, and cable television service and maintenance technicians
C. Plumbers, steam fitters, pipefitters, sprinkler system installers, and gas fitters
D. Sheet metal workers, boilermakers, structural metal and platework fabricators and fitters, ironworkers, skilled welders, blacksmiths, and die setters
E. Carpenters and related workers
F. Machinery and transportation equipment, motor vehicle, and other mechanics
G. Crane operators; drillers/blasters in surface mining, quarrying, and construction; heavy equipment operators; longshore workers; public works maintenance equipment operators; railway track maintenance workers; and water well drillers
H. Workers who produce camera work, printing plates, and cylinders; process film; print text and illustrations; and bind/finish
printed products
I. Masons, plasterers, construction workers, installers, repairers, and servicers


