M&J Drilling Services is a specialist contractor involved in the development and delivery of geotechnical solutions to various ground problems. The main activities of the company are drilling (rotary and rotary percussive) and grouting, and the list that follows gives details of the applications: Rotary Investigation (open hole, coring and installations); Stabilisation of shallow mineworkings; Mineshaft location and treatment; Void infilling (large mine workings) and other underground stabilisation works (cellars and tanks); Soil nails and ground anchors; Sewer and tunnel grouting;