Micro piles have been used effectively in many applications of ground improvement not only as working piles with high loads in constraint areas but also for strengthening the existing foundations. Having evolved more than 50years ago,micro piles are now technically and economically viable solution to problems of high vertical loads, lateral loading, high bending tolerance and seismic retrofit. They are one of the more efficient deep foundation systems available in the industry. They can tolerate very large loads for their small size when socket in rock. With our rigs of various sizes, we are able to construct micro piles of sizes from just 75mm up to 300mm in soil and 90mm to 250mm in rock. We can construct piles in very constrained areas using our small drilling frame. Our construction methods available include wash (recirculation) boring using a drag bit, roller (tricone) bit for stiffer/harder soils or casing + shoe for drilling through buried timber and organic deposits. For rock, we employ the Downthe Holy Hammer (DTH), which is a bottom driven self-actuating hammer powered by an air compressor which can penetrate all rocks including Grade I granite.