DEPARTMENT OF LABOR MSHA
Conveyor belt systems are used extensively in underground mines to transport mined material. MSHA estimates there are about 3,000 feet (900 meters) of conveyor belt in an average small underground coal mine (covering 1,500 feet (450 m) for conveyance and return) and 28,000 feet (8,500 m) of conveyor belt in an average large underground mine.