Operate and watch over bridges, canal locks, and lighthouses to permit marine passage on inland waterways, near shores, and at danger points in waterway passages. They supervise such operations. Includes drawbridge operators, lock operators, and slip bridge operators.
Supervise and coordinate activities of crew engaged in operating and maintaining engines, boilers, deck machinery, and electrical, sanitary, and refrigeration equipment aboard ship.
Coordinate activities of switch engine crew within railroad yard, industrial plant, or similar location. They coordinate activities of train crew on passenger or shipment trains. They review train schedules and switching orders and coordinate activities of workers engaged in railroad traffic operations, such as the makeup or breakup of trains and yard switching.
Drive truck or other vehicle over established routes or within an established territory and sell or deliver goods, such as food products, including restaurant take out items, or pick up or deliver items such as commercial laundry. They also take orders, collect payment, or stock merchandise at point of delivery. Includes newspaper delivery drivers.
Transport students or special clients, such as the elderly or persons with disabilities. They ensure adherence to safety rules. They assist passengers in boarding or exiting.
Drive ambulance or assist ambulance driver in transporting sick, injured, or convalescent persons. They assist in lifting patients.
Supervise and coordinate the activities of ground crew in the loading, unloading, securing, and staging of aircraft cargo or baggage. They determine the quantity and orientation of cargo and compute aircraft center of gravity. They monitor and handle cargo in flight, and assist and brief passengers on safety and emergency procedures. This includes luggage loaders.
Operate production machines such as clay mills, vibration machine, or potter's wheel to process clay in the manufacture of ceramic, stone and clay objects.
Cut or carve stone according to diagrams and patterns.
Engrave or carve metal, wood, rubber, or other materials. Includes such workers as etcher circuit processors, pantograph engravers, and silk screen etchers.
