Set up, operate, or watch over machines, such as glass forming machines, plodder machines, and tuber machines. They shape and form products, such as glassware, food, rubber, soap, brick, tile, clay, wax, tobacco, or cosmetics.

Use hand tools or hand held power tools to cut and trim a variety of manufactured items, such as carpet, fabric, stone, glass, or rubber.

Set up, operate, or watch over machines to mix or blend materials, such as chemicals, tobacco, liquids, color pigments, or explosive ingredients.

Set up, operate, or watch over machines to crush, grind, or polish materials, such as coal, glass, grain, stone, food, or rubber.

Set up, operate, or watch over continuous flow or vat type equipment; filter presses; shaker screens; centrifuges; condenser tubes; precipitating, fermenting, or evaporating tanks; scrubbing towers; or batch stills. These machines extract, sort, or separate liquids, gases, or solids from other materials to recover a refined product. Includes dairy processing equipment operators.

Operate or watch over equipment to control chemical changes or reactions in the processing of industrial or consumer products. Their equipment used includes devulcanizers, steam jacketed kettles, and reactor vessels.

Monitor and control activities associated with hydropower generation. They operate plant equipment, such as turbines, pumps, valves, gates, fans, electric control boards, and battery banks. They monitor equipment operation and performance and make necessary adjustments to ensure optimal performance. They perform equipment maintenance and repair as necessary.

Operate or control petroleum refining or processing units. They specialize in controlling manifold and pumping systems, gauging or testing oil in storage tanks, or regulating the flow of oil into pipelines.

Distribute or process gas for utility companies and others by controlling compressors to maintain specified pressures on main pipelines.

Control or operate entire chemical processes or system of machines.