heavy and tractor-trailer truck drivers

Operating self-propelled equipment such as truck or tractor with trailer attached in the process of reaping, harvesting, threshing, swathing or winnowing grain and forage crops such as corn, wheat, hay, canola, milo; pre-record information about crops during harvesting; direct and monitor harvesting work; weigh crops and record weights and identifying information; perform manual or mechanical adjustments; maintain and repair equipment and tools; transport harvested crops to elevators, silos, or other storage areas; drive equipment such as trucks, tractors, and trailers from one field to another.