Pry off loose material from roofs and move it into the paths of machines, using crowbars.
Move trailing electrical cables clear of obstructions, using rubber safety gloves.
Drive machines into piles of material blasted from working faces.
Operate levers to move conveyor booms or shovels so that mine contents such as coal, rock, and ore can be placed into cars or onto conveyors.
Clean hoppers, and clean spillage from tracks, walks, driveways, and conveyor decking.
Oil, lubricate, and adjust conveyors, crushers, and other equipment, using hand tools and lubricating equipment.
Stop gathering arms when cars are full.
Advance machines to gather material and convey it into cars.
Start conveyor booms and gathering-arm motors, and operate winches to position cars under boom conveyors for loading.
Signal workers to move loaded cars.