State: Colorado

City: Keystone

Mine Remediation

Harrison Western rehabilitated 600 LF of tunnel in the Pennsylvania Mine, which is located at over 10,000 feet elevation. In addition to scaling, spiling, and installing steel sets to re-support the historic mine, HW cleared a cave-in at the 100’ station, installed a walkway, and cleaned ventilation structures to allow teams to investigate and establish parameters for a concrete bulkhead and closure. Contaminated water was diverted through a passive water treatment system before release downstream.

Estimating and

Business Development

(720) 552-0486

Human Resources

and Safety

(720) 881-4056


(303) 665-2704