Everyone switched off their headlamps and there we stood together in total darkness, inside the San Gabriel Mountains. Yes, inside. I had joined a local caving group in an attempt to understand more ...

Discontinuous structures in coal mine roadway roofs, such as rock interfaces and joint fractures, are critical factors leading to surrounding rock instability. The use of Measurement While Drilling ...

In geotechnical engineering, rock joints are the key factor in determining the stability of rock. Quickly and accurately identifying the joints in the rock has always been a concern in geotechnical ...