Repair, install or maintain mobile or stationary radio transmitting, broadcasting, and receiving equipment, and two way radio communications systems used in cellular telecommunications, mobile broadband, ship to shore, aircraft to ground communications, and radio equipment in service and emergency vehicles. They test and analyze network coverage.
Repair, maintain, or install computers, word processing systems, automated teller machines, and electronic office machines, such as duplicating and fax machines.
Assemble or repair oil field equipment using hand and power tools. They perform other tasks as needed.
Rig drilling equipment and operate pumps to circulate mud through drill hole.
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.
Assemble, install, repair, or maintain electric or hydraulic shipment or passenger elevators, escalators, or dumbwaiters.
Install, maintain, and repair electrical wiring, equipment, and fixtures. They ensure that work is in accordance with relevant codes. They install or service street lights, intercom systems, or electrical control systems.
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.
Measure, record, or evaluate geological data, using sonic, electronic, electrical, seismic, or gravity measuring instruments to prospect for oil or gas. They collect or evaluate core samples or cuttings.
Research and study the structures and chemical properties of various natural and synthetic or composite materials, including metals, alloys, rubber, ceramics, semiconductors, polymers, and glass. They determine ways to strengthen or combine materials or develop new materials with new or specific properties for use in a variety of products and applications.
