Stu Blattner Monday, July 22, 2013 HomeCompany ProfileWho We AreMission & VisionManufacturingRaise Bore MachinesCutter HeadsReamersDrill PipeContractingInternational SBM 450 The SBM 450 is a complete system for drilling long holes and boring raises as large as 7 ft (2.1 m) in diameter and 1,500 ...