Rig drilling equipment and operate pumps to circulate mud through drill hole.

Perform a variety of activities to weatherize homes and make them more energy efficient. Their duties include repairing windows, insulating ducts, and performing heating, ventilating, and air conditioning (hvac) work. They perform energy audits and advise clients on energy conservation measures.

Install or repair solar energy systems designed to collect, store, and circulate solar heated water for residential, commercial or industrial use.

Lay out, cut, and place segmental paving units. Includes installers of bedding and restraining materials for the paving units.

Clean and repair septic tanks, sewer lines, or drains. They patch walls and partitions of tank, replace damaged drain tile, or repair breaks in underground piping.

Lay, repair, and maintain track for standard or narrow gauge railroad equipment used in regular railroad service or in plant yards, quarries, sand and gravel pits, and mines. Includes ballast cleaning machine operators and railroad bed tamping machine operators.

Maintain highways, municipal and rural roads, airport runways, and rights of way. Their duties include patching broken or eroded pavement, repairing guard rails, highway markers, and snow fences. They also mow or clear brush from along road or plow snow from roadway.

Identify, remove, pack, transport, or dispose of hazardous materials, including asbestos, lead based paint, waste oil, fuel, transmission fluid, radioactive materials, or contaminated soil. They are generally required specialized training and certification in hazardous materials handling or a confined entry permit. They operate earth moving equipment or trucks.

Erect and repair fences and fence gates, using hand and power tools.

Assemble, install, repair, or maintain electric or hydraulic shipment or passenger elevators, escalators, or dumbwaiters.