... machine can be used together with tramcar for rock loading. Z-17Electric rock-loading machineUsage:The kind of electric rock-loading ... without guide rope.Z-17,Z-17A,Z-20C and Z-30 can match used together with tramcar.Z-17A,Z-20C and Z-30 can match ... ,Copper,Manganese,Uranium,Cobblestone,Marble Stone,Gyratory,Calcite,Clay, Dolomite Z-17 Electric rock-loading machine