Laminate layers of fiberglass on molds to form boat decks and hulls, bodies for golf carts, automobiles, or other products.

Construct, assemble, or rebuild machines, such as engines, turbines, and similar equipment used in such industries as construction, extraction, textiles, and paper manufacturing.

Assemble or modify electromechanical equipment or devices, such as servomechanisms, gyros, dynamometers, magnetic drums, tape drives, brakes, control linkage, actuators, and appliances.

Assemble or modify electrical or electronic equipment, such as computers, test equipment telemetering systems, electric motors, and batteries.

Wind wire coils used in electrical components, such as resistors and transformers, and in electrical equipment and instruments, such as field cores, bobbins, armature cores, electrical motors, generators, and control equipment.

Perform technical activities at power plants or individual installations necessary for the generation of power from geothermal energy sources. They monitor and control operating activities at geothermal power generation facilities and perform maintenance and repairs as necessary. They install, test, and maintain residential and commercial geothermal heat pumps.

Help installation, maintenance, and repair workers in maintenance, parts replacement, and repair of vehicles, industrial machinery, and electrical and electronic equipment. They perform duties such as furnishing tools, materials, and supplies to other workers; cleaning work area, machines, and tools; and holding materials or tools for other workers.

Work below surface of water, using scuba gear to inspect, repair, remove, or install equipment and structures. They use a variety of power and hand tools, such as drills, sledgehammers, torches, and welding equipment. They conduct tests or experiments, rig explosives, or photograph structures or marine life.

Install and repair telecommunications cable, including fiber optics.

Build or repair equipment such as furnaces, kilns, cupolas, boilers, converters, ladles, soaking pits and ovens, using refractory materials.