Operate pile drillers mounted on rails, barges, crawler treads, or locomotive cranes to drive pilings for retaining walls, bulkheads, and foundations of structures, such as buildings, bridges, and piers.

Operate equipment used for applying concrete, asphalt, or other materials to road beds, parking lots, or airport runways and taxiways, or equipment used for tamping gravel, dirt, or other materials. Includes concrete and asphalt paving machine operators, form tampers, tamping machine operators, and stone spreader operators.

Perform tasks involving physical labor at construction sites. They operate hand and power tools of all types: air hammers, earth tampers, cement mixers, small mechanical hoists, surveying and measuring equipment. They clean and prepare sites, dig trenches, set braces to support the sides of excavations, erect scaffolding, and clean up rubble, debris and other waste materials.

Construct, assemble, maintain, and repair stationary steam boilers and boiler house auxiliaries. They align structures or plate sections to assemble boiler frame tanks or vats, following blueprints. Work involves use of hand and power tools, plumb bobs, levels, wedges, dogs, or turnbuckles.

Drive logging tractor or wheeled vehicle equipped with one or more accessories such as bulldozer blade, frontal shear, grapple, logging arch, cable winches, hoisting rack, or crane boom, to fell tree; to skid, load, unload, or stack logs; or to pull stumps or clear brush.

Watch over live farm, ranch, or aquacultural animals that may include cattle, sheep, swine, goats, horses and other equines, poultry, finfish, shellfish, and bees. They watch over animals raised for animal products. Their duties include feeding, watering, herding, grazing, castrating, branding, de beaking, weighing, catching, and loading animals.

Use hand tools to plant, cultivate, and harvest vegetables, fruits, nuts and field crops. Their duties may include tilling soil and applying fertilizers; transplanting, weeding, thinning, or pruning crops; applying pesticides; cleaning, packing, and loading harvested products. They construct trellises, repair fences and farm buildings, or participate in irrigation activities.

Drive and control farm equipment to till soil and to plant, cultivate, and harvest crops. They perform tasks, such as crop baling or hay bucking. They operate stationary equipment to perform post harvest tasks, such as husking, shelling, threshing, and ginning.

Operate one or more of a variety of office machines, such as photocopying, photographic, and duplicating machines, or other office machines.

Monitor and control electronic computer and peripheral electronic data processing equipment to process business, scientific, engineering, and other data according to operating instructions. They monitor and respond to operating and error messages. They enter commands at a computer terminal and set controls on computer and peripheral devices.