Spiro Tunnel Rehabilitation
TUNNEL REHABILITATION Harrison Western rehabilitated the Spiro Tunnel portal and 5,400 LF of tunnel. The portal entrance was widened during excavation to make room for a historical display cataloging the tunnel’s unique Park City history. HW removed the failed existing support structures throughout the tunnel and replaced them with steel sets, resin and grouted bolts, […]
Rio Grande Reservoir Inlet/Outlet Tunnel
TUNNEL REHABILITATION Harrison Western rehabilitated this 100-year-old water tunnel, which sits at 10,000 feet elevation. The tunnel is 14′ wide, 12′ tall, and 400′ long. Work included pattern bolting, shotcrete, and pressure grouting. HW also drove a new 80’ long bypass tunnel, which was also bolted and reinforced with steel and shotcrete. Other Projects ALL […]
Commodore Mine Rehabilitation
MINE REMEDIATION Harrison Western rehabilitated five segments of this historic mine tunnel. HW installed modern utilities and communication systems, replaced damaged ventilation doors and a portal gate, rehabilitated 3,675 of drift, rehabilitated some raises and winzes, filled other overhead stopes and raises with polyurethane foam, and added access and safety features to the raise and […]
LBNF Crusher/Conveyor/Ore Bin Rehabilitation
MINE CONSTRUCTION The former Homestake Gold Mine was converted into the Sanford Underground Research Facility for the purpose of conducting multiple underground experiments. One of these experiments involves studying neutrino movement through the earth, and for this, part of the mine has been designated the ‘Long Baseline Neutrino Facility’ (LBNF). To facilitate the neutrino experiment, […]
Hutchinson Salt Mine Headframe Construction
MINE CONSTRUCTION Harrison Western designed and built a new headframe around the existing 100-year-old headframe and mill building while the mine remained in operation. HW also designed the structural foundations, which were comprised of 18 drilled concrete piles, 65′ in depth. The piles were installed in close proximity to existing structures and utilities. HW completed […]
Laramie-Poudre Tunnel Rehabilitation
Tunnel Rehabilitation 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 structural foam. After a major scaling operation, HW reinforced the tunnel with new steel sets, pattern rock bolting, shotcrete, and pressure grouting. […]
Lyons Salt Bulkhead
MINE CONSTRUCTION Harrison Western has worked on several projects at this underground salt mine over the past decade, including a unique design-build bulkhead, a grouting program, and a bolting program. Other Projects ALL PROJECTS Heavy Civil Seven Sisters Avalanche Mitigation Tunnel Rehabilitation Rio Grande Reservoir Inlet/Outlet Tunnel Tunnel Rehabilitation Spiro Tunnel Rehabilitation Load More
Skyline Mine Ventilation Slope
MINE CONSTRUCTION Under several different contracts, Harrison Western has completed numerous projects at the Hockley Salt Mine. Major projects included shaft and headframe repairs, ground control, installation of ventilation structures, mill building repairs, and nipping of large and unusual equipment into and out of the mine. Ground control projects included scaling and controlled blasting of […]
Seven Falls Rockfall Mitigation
HEAVY CIVIL CONSTRUCTION For the safety of visiting tourists, Harrison Western stabilized some unstable areas of rock wall by scaling down semi-loose rock and then installing 10,000 SF of Geobrugg TECCO Mesh Fence and 100 LF of chain link barrier fence. A private helicopter was required to mobilize the materials up to the project area. […]
I-70 Twin Tunnels Rock Excavation
HEAVY CIVIL CONSTRUCTION For the widening of the westbound lanes of I-70 at the Twin Tunnels, Harrison Western excavated 50,000 CY of rock with careful and calculated drilling and blasting. The work was limited to a maximum of four blasts per day. After blasting, HW installed 74,000 SF of rock fall mesh, 34 grouted anchors, […]
