Drilling is one of the most complex machining processes. The chief characteristic that distinguishes it from other machining operations is the combined cutting and extrusion of metal at the chisel ...

Rock mechanics and drilling operations constitute a dynamic field that bridges fundamental geoscience with practical engineering applications. This area focuses on understanding the mechanical ...

Drilling in its broadest sense is any process that involves making a circular hole in a solid material or hard surface using a boring tool. With thousands of applications across industries, drilling ...

LUCKNOW, India (AP) — Forty-one workers remained trapped in a collapsed road tunnel in northern India for a seventh day Saturday as a new drilling machine arrived on site to replace the damaged one.