MINING COAL PLANERS, MINING CHUTES, COAL CONVEYORS, DISK RETARDING CONVEYORS, COAL RAKE PULL LOADERS, MINING RAPID LOADERS; HELICALTOOTHED MOTORS FOR DRIVING COAL CONVEYORS, CENTRIFUGAL PUMPS, WINCHES, AND JACKS; TUB CLEANING MACHINERY FOR MAINTENANCE OF TUBS AND MINE CARS; TRAYS FOR MINING CONVEYORS; CHAIN FLIGHTS FOR MINING CONVEYORS; PULLS AND CABLES FOR MINING CONVEYORS AND PLANERS; WEDGES FOR MINING PLANING MACHINERY; CHAINS AND DISKS FOR DISK RETARDING CONVEYORS; CHUTES FOR DISK RETARDING CONVEYORS; LOADING RAKES AND SHOVELS; AUTOMATIC COUPLINGS FOR COAL LOADERS; SHOVEL VIBRATORS FOR COAL LOADERS; DRIVING PULLEYS AND DRUM WINCHES FOR MINING HAULAGE MACHINERY; GAS-DRIVEN MOTORS AND DRIVES FOR MINING MACHINERY