Underground Contractors. Specialists in High speed tunnelling and decline excavations
Geotechnical Instrumentation (GI) is a Specialist Geotechnical Instrumentation Company with unparalleled 34 years experience in the instrumentation of Boreholes, Bridges, Civil...
The CON-PNEU-FLATE is an inflatable conveyance device that will creep up a vertical passage way or tunnel.