Calculate, measure, load, mix, and process refined feedstock with additives in fermentation or reaction process vessels and monitor production process. They perform, and keep records of, plant maintenance, repairs, and safety inspections.

Coordinate, regulate, or distribute electricity or steam.

Operate or control nuclear reactors. They move control rods, start and stop equipment, monitor and adjust controls, and record data in logs. They implement emergency procedures when needed. They respond to abnormalities, determine cause, and recommend corrective action.

Plan, lay out, and construct wooden or sectional patterns used in forming sand molds for castings.

Construct full size and scale wooden precision models of products. Includes wood jig builders and loft workers.

Make, repair, or replace upholstery for household furniture or transportation vehicles.

Draw and construct sets of precision master fabric patterns or layouts. They also mark and cut fabrics and apparel.

Cut, trim, or prepare consumer sized portions of meat for use or sale in retail establishments.

Fabricate, position, align, and fit parts of structural metal products.

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