The Robbins Company – TBM Manufacturer

The blog of Harold W. Asmis, a retired geophysicist and engineer from the Ontario Power Generation Company. His career experience includes tunnel analysis, regional geologic mapping, and earthquake engineering in support of nuclear power plant […]

An article in TBM magazine provides a nice overview of cellular concrete technology. I never knew this (although it makes sense) but the material was used primarily as a lightweight floor leveling product for high-rise […]

The British Tunnelling Society (BTS) is encouraging our profession and the public to celebrate National Tunneling Day today, December 7.  Their goal is to promote the industry (and its many professions) to students of all ages […]