Drill & Blast
Horizontal Auger Boring
Tunnel Bore Machine
Harrison Western rehabilitated almost half of this two-mile, trans-mountain irrigation water tunnel that was originally built in 1910. HW removed degraded steel and timber sets and filled dangerous overhead cavities with …
As a mining and heavy civil contractor established in 1968, we have been working in underground settings non-stop for over 50 years. We have either built, maintained, repaired or rehabilitated thousands of miles of underground passageways and infrastructure.
With the addition of our subsidiary firm UIT performing trenchless utility installations, and the recent expansion of geotechnical service offerings, our suite of services can perform nearly any subterranean scope.