Set up, operate, or watch over grinding and related tools that remove excess material or burrs from surfaces, sharpen edges or corners, or buff, hone, or polish metal or plastic work pieces.

Set up, operate, or watch over drilling machines to drill, bore, ream, mill, or countersink metal or plastic work pieces.

Set up, operate, or watch over machines to saw, cut, shear, slit, punch, crimp, notch, bend, or straighten metal or plastic material.

Set up, operate, or watch over machines to roll steel or plastic forming bends, beads, knurls, rolls, or plate or to flatten, temper, or reduce gauge of material.

Set up, operate, or watch over machines to extrude or draw thermoplastic or metal materials into tubes, rods, hoses, wire, bars, or structural shapes.

Operate or watch over cooking equipment, such as steam cooking vats, deep fry cookers, pressure cookers, kettles, and boilers, to prepare food products.

Set up and operate equipment that mixes or liquifies ingredients used in the manufacturing of food products. Includes candy makers and cheese makers.

Operate or watch over food or tobacco roasting, baking, or drying equipment, including hearth ovens, kiln driers, roasters, char kilns, and vacuum drying equipment.

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.