Here are presented systematic measurements of the frictional properties and composition of the San Andreas Fault at 2.7 km depth, including the wall rock and active fault. We nd that the faultis weak relative to the surrounding rock and that the fault rock ...

A case study is presented that relates statistical descriptions of joint sets to the distribution of local wedge failures along the crest of a catch bench at the Yellowstone Talc Mine. The fracture sets and bench width were mapped by teams of geological engineering ...

This paper describes two projects in which serpentinite caused significant problems: during design of the Kusan - 3 HEPP dam in Indonesia: and during construction of the Berke powerhouse access tunnel in Turkey.