Guy F. Atkinson Construction, LLC, a wholly owned subsidiary of Clark Construction Group, LLC, is headquartered in Broomfield, CO with regional offices located in Golden, CO, Seattle, WA, Southern California, and Washington D.C. The Golden, CO office provides management, estimating and engineering support for all mining, tunneling , and underground excavation type projects. Atkinson specializes in underground development and production mining via tunnel excavation and shaft sinking. The company has extensive experience with NATM tunneling techniques, Drill & Blast methods, and TBM operations. Atkinson’s personnel have an average of over 20 years of experience working in the mining and heavy civil industries completing projects on schedule, on budget, and in the safest means possible.