POWER SHOVELS; [ RAILWAY-TYPE POWER SHOVELS; ] REVOLVING POWER SHOVELS; [ EXCAVATING MACHINERY AND ] EXCAVATORS-NAMELY, [ GRAB-BUCKET EXCAVATORS, CLAMSHELL EXCAVATORS, ORANGE PEEL EXCAVATORS, ] DRAGLINE EXCAVATORS, [ TRENCH EXCAVATORS, TOWER EXCAVATORS, ] COAL LOADERS, AND COAL LOADING MACHINERY; [ DREDGES AND DREDGING MACHINERY-NAMELY, DIPPER DREDGES, ELEVATOR DREDGES, ALLUVIAL MINING DREDGES, CLAMSHELL DREDGES; AND HYDRAULIC OR SUCTION DREDGES; UNLOADING PLOWS; SPREADER PLOWS; UNLOADING MACHINES; CRANES-NAMELY, TRAVELING CRANES, CRAWLER-MOUNTED CRANES, TRUCK-MOUNTED CRANES, RAILWAY WRECKING CRANES, AND RAILWAY BREAKDOWN CRANES; PILE DRIVERS-NAMELY, RAILWAY LOCOMOTIVE PILE DRIVERS, RAILWAY PILE DRIVING MACHINES, CRAWLER-MOUNTED PILE DRIVERS, AND FLOATING PILE DRIVERS; PUMPS-NAMELY, PUMPS FOR EXCAVATING PURPOSES, LIQUID PUMPS, AND AIR PUMPS; HOISTS-NAMELY, POWER-OPERATED HOISTS, MANUALLY-OPERATED HOISTS, AND POWER BOOM HOISTS; DERRICKS-NAMELY, POWER-OPERATED DERRICKS, MANUALLY-OPERATED DERRICKS, FLOATING DERRICKS AND MOBILE DERRICKS; WINCHES; AIR COMPRESSORS; NON-ELECTRIC POWER OPERATED FANS FOR INDUSTRIAL USES, COOLING FANS FOR POWER PLANTS; STEAM ENGINES; CREEPING TRACTION MECHANISM; REVETMENT PLANTS; FORCE-FEED LUBRICATORS; ROLLERS FOR USE WITH MACHINES MOUNTED ON SKIDS; HYDRAULIC JACKS; RATCHET JACKS; INJECTORS; DIPPER TRIPS; FUEL HOISTS; LIFTING BEAMS; DREDGE BUCKETS; GRAB BUCKETS; CLAM-SHELL BUCKETS; ORANGE-PEEL BUCKETS; ] DRAG BUCKETS; EXCAVATING DIPPERS; WALKING EXCAVATORS-NAMELY, [ WALKING POWER SHOVELS AND ] WALKING DRAGLINES; [ WALKING MECHANISMS FOR EXCAVATORS; CAR-TRANSPORTERS; TRACTOR EQUIPMENT-NAMELY, BULLDOZERS, BOTH FIXED AND ANGLING, OPERATED HYDRAULICALLY AND/OR BY CABLE, CARRYING SCRAPERS, OPERATED HYDRAULICALLY AND/OR BY CABLE, TRACTOR SHOVELS, TRACTOR-DRAWN RIPPERS, TAMPING ROLLERS, TRACTOR-PROPELLED GRUBBERS, PUSHER PLATES FOR TRACTORS, CABS FOR TRACTORS, HYDRAULIC POWER ACTUATED CONTROL UNITS AND TRACTOR WINCHES; SNOW-PLOWS; ] DRILLS, [ BOTH CHURN-TYPE AND CABLE-TOOL, AND BOTH WHEEL-MOUNTED ] CRAWLER-MOUNTED [ , TRUCK-MOUNTED, AND SKID MOUNTED; BIT-DRESSERS FOR SHAPING DRILL BITS; BIT CRANES; DRILL EQUIPMENT-NAMELY, BITS DRILL STEMS, SINKER BARS, STUBS, SUBS, JARS, JAR BUMPERS, TOOL WRENCHES, SPUDS, LATCH JACKS, ROPE SPEARS, HORN SOCKETS, FRICTION SOCKETS, ROUND REAMERS, WIRE LINE SAVERS, VALVES FOR BAILERS, CHANGE LINKS, DRIVE CLAMPS, ANVIL BLOCKS, CASING RINGS, AND SLIPS FOR CASING RINGS; ROPE SOCKETS ] ; DIPPER TEETH AND LIPS; BUCKET TEETH AND LIPS; AND REPAIR, SPARE AND REPLACEMENT PARTS AND UNITS FOR THE SPECIFIED GOODS; SUCH OF THE FOREGOING AS ARE POWER-OPERATED BEING OPERATED BY [ STEAM POWER, ] ELECTRICALLY OPERATED, GASOLINE - ENGINE POWER, DIESEL - ENGINE POWER, [ SEMIDIESEL-ENGINE POWER, ] OR OTHER POWER