UNIT RIG

[ OIL FIELD TRAILERS, ] MINE HAULAGE TRUCKS [, AIRCRAFT TRUCKS, BRIDGE LAUNCHER VEHICLE HAVING BRIDGE COMPONENTS FOR LAUNCHING ACROSS A CREVICE TO PROVIDE A BRIDGE THEREOVER, SAID BRIDGE COMPONENTS BEING RETRACTED BY THE VEHICLE AFTER PASSAGE OF THE VEHICLE OVER THE BRIDGE ]

[ DRAW WORKS, POWER UNITS SUCH AS INTERNAL COMBUSTION ENGINES, PUMP UNITS, ROTARY TABLES, TRAVELING BLOCKS, BLOCK HOOK COMBINATIONS, ANCHOR WINDLASS, MARINE TRANSMISSION, DITCHING MACHINES, FORK LIFT TRUCKS, AND TRENCHING MACHINES ]