P. Evans and A. Reid, being sensible of this position, and particularly of the essential part now played by mud-fluid in rotary drilling, have compiled a paper (Trans. Min. and Geol.4 Inst.

The T3W is a hydraulic, top-head drive drill rig designed for waterwell and other applications requiring air or mud rotary, as well as down-the-hole hammer drilling methods. The drill is suitable ...

The T2W-III is Atlas Copco’s single-engine rig for rotary and down-the-hole (DTH) drilling in the 30,000-pound class. It is designed for both air and mud applications, and ships with an on-board ...