GD

[ DRILL BITS; DRILL SHARPENERS, PNEUMATIC AND MANUAL OPERATED; DRILL RETAINERS, DRILL EXTRACTORS, ] ROCK-DRILL UNITS, ROCK-DRILL MOUNTINGS AND SUPPORTS, LUBRICATORS, SHEETING [ AND PILE ] DRIVERS; HOISTS, [ ELECTRIC AND ] PNEUMATIC; TAMPERS; PAVEMENT BREAKERS, SPADERS, [ TOOL HANDLES, ] AIR AND GAS COMPRESSORS, [ CIRCULATING FANS, APPARATUS FOR FORMING COLLARS ON DRILL STEEL AND HOLE PUNCHERS FOR SHARPENING DRILLS, AIR AND GAS PUMPS, AND GOVERNORS FOR ENGINES, MOTORS, ] AND PUMPS