power operated diamond drilling rigs, rods and tools, namely cores, barrels, diamond drilling bits, reaming shells, circular saws, diamond wire and diamond coring bits; power operated diamond sawing and cutting machines and tools, namely cores, barrels, diamond drilling bits, reaming shells, circular saws, diamond wire and diamond coring bits; power operated vibratory rotary and rotary percussion drilling rigs, machines, tools, namely cores, barrels, diamond drilling bits, reaming shells, circular saws, diamond wire and diamond coring bits and cemented tungsten carbide structural parts thereof; high precision abrading and grinding machines and power operated tools, namely cores, barrels, diamond drilling bits, reaming shells, circular saws, diamond wire and diamond coring bits; cemented tungsten carbide component parts for mining and industrial applications for diamond synthesis, namely earth and rock drilling inserts for use on rotary and rotary/percussive rock drilling equipment, grinding burrs for use on metal pressing and deburring equipment and end mill rods for use on milling machines for metal removal in engineering and manufacturing work shops

instrumentation for measurement of moisture levels, compaction levels and permeability of soil, asphalt content of paving and ground settlement; and equipment in the nature of inclinometers and casings, electrolevel beam sensors, piezometers and extensometers