Load and unload chemicals and bulk solids, such as coal, sand, and grain into or from tank cars, trucks, or ships using material moving equipment. They perform a variety of other tasks relating to shipment of products. They gauge or sample shipping tanks and test them for leaks.

Operate diesel or electric powered shuttle car in underground mine to transport materials from working face to mine cars or conveyor.

Collect and dump refuse or recyclable materials from containers into trucks. They drive trucks.

Operate power pumps and auxiliary equipment to produce flow of oil or gas from wells in oil field.

Tend, control, or operate power driven, stationary, or portable pumps and manifold systems to transfer gases, oil, other liquids, slurries, or powdered materials to and from various vessels and processes.

Operate steam, gas, electric motor, or internal combustion engine driven compressors. They transmit, compress, or recover gases, such as butane, nitrogen, hydrogen, and natural gas.

Pack or wrap by hand a wide variety of products and materials.

Feed materials into or remove materials from machines or equipment that is automatic or watched over by other workers.

Manually move shipment, stock, or other materials or perform other general labor. Includes all manual laborers not elsewhere classified.

Wash or clean vehicles, machinery, and other equipment. They use materials such as water, cleaning agents, brushes, cloths, and hoses.