excavator for mining granite

aggregate asphalt ballast bituminous brick building cemented chad chip chipping chippings chipplings chips coarse construction conveyors crushers cushion debris digger dredger dredging earthmover excavator extraction filling geest grab grail granite gravel grit gritting grouan gvl hoggin loading loose machine material mechanical navvy pebble pit plant power processor production ratchel ratchet road roads rounded rubble sand sealed shingle shovel shoveling spalls unimproved wash