OILFIELD EQUIPMENT USED OFFSHORE AND ON LAND, NAMELY, DRILLING EQUIPMENT, NAMELY, TRUCK-MOUNTED DRILLING RIGS, TRAILER-MOUNTED DRILLING RIGS, SUBSTRUCTURES FOR DRILLING AND WORK OVER RIGS, MODULAR DRILLING RIGS, HELICOPTER DRILLING RIGS, AND PORTABLE MUD PUMPS; WELL SERVICE EQUIPMENT, NAMELY, CEMENTING EQUIPMENT, NAMELY, CONCRETE MIXERS; HIGH PRESSURE FLUID CONTROL PRODUCTS, NAMELY, MANIFOLDS IN THE NATURE OF HIGH PRESSURE OILFIELD FITTINGS; AND PARTS OF MACHINES AND MACHINE TOOLS FOR USE IN ...