Operate industrial trucks or tractors equipped to move materials around a warehouse, storage yard, factory, construction site, or similar location.

Operate or watch over hoists or winches to lift and pull loads using power operated cable equipment.

Operate dredge to remove sand, gravel, or other materials in order to excavate and maintain navigable channels in waterways.

Operate and watch over bridges, canal locks, and lighthouses to permit marine passage on inland waterways, near shores, and at danger points in waterway passages. They supervise such operations. Includes drawbridge operators, lock operators, and slip bridge operators.

Coordinate activities of switch engine crew within railroad yard, industrial plant, or similar location. They coordinate activities of train crew on passenger or shipment trains. They review train schedules and switching orders and coordinate activities of workers engaged in railroad traffic operations, such as the makeup or breakup of trains and yard switching.

Directly supervise and coordinate the activities of helpers, laborers, or material movers.

Operate or watch over machines to prepare industrial or consumer products for storage or shipment. Includes cannery workers who pack food products.

Assemble or repair oil field equipment using hand and power tools. They perform other tasks as needed.

Operate machinery to install roof support bolts in underground mine.

Operate machinery such as longwall shears, plows, and cutting machines. They cut or channel along the face or seams of coal mines, stone quarries, or other mining surfaces. They facilitate blasting, separating, or removing minerals or materials from mines or from the surface. Includes shale planers.