Workers in this minor group perform freight handling tasks, such as loading and unloading ship and aircraft cargoes and other freight, including petroleum, wrapping objects, packing liquids, material and objects in containers, affixing labels and making marks on containers and operating baling presses; rig cables, wires and ropes for lifting, hauling and other purposes, and splice cables; operate cranes and other hoisting equipment; operate machines to excavate, grade, level and compact earth, mix concrete and lay road surfaces of asphalt and concrete; operate specialised vehicles (not used for road transport) to lift, move, dump and stack materials in warehouses, on mining and construction sites and in timber yards and other establishments; and perform related tasks such as operating conveyors and aerial ropeways.