Operate derricks to move equipment or materials to and from quarries.
What does a Derrick Operator do?
Operates electric-, diesel-, gasoline-, or steam-powered guy-derrick or stiff-leg derrick, to move products, equipment, or materials to and from quarries, storage areas, and processes, or to load and unload trucks or railroad cars: Pushes and pulls levers and depresses pedals to raise, lower, and rotate boom and to raise and lower load line in response to signals. May inspect and lubricate cables, pulleys, guides, and drums. May be known according to material moved as Log-Yard Derrick Operator; or equipment controlled as Stiff-Leg Derrick Operator.