The Schramm T300M is a compact, maneuverable, top head drive, truck mounted drill rig designed to drill up to 12 inch (305 mm) diameter holes using mud rotary methods with rig mounted mud pumps and hollow stem augers, and air rotary and DTH hammer techniques using remote located air compressors. The truck engine provides reliable power for all hydraulic, mud and air systems. Separate drill rig subframe design permits stable mounting on standard trucks as well as on various other trucks and special purpose vehicles of other manufacture. Rugged top head drive rotation and efficient pipe handling mean high productivity on the job site, more time spent drilling.