John Stolz is a Principal at Delve Underground, specializing in heavy civil and tunnel design and construction services, particularly in cost estimating, risk analysis, and project management. They have led significant projects, including the DTX Downtown Rail Extension and the JWPCP Effluent Outfall Tunnel, showcasing expertise in complex tunneling techniques. Prior to their current role, John worked at Guy F. Atkinson Co. as an Estimator/Engineer and at S.A. Healy Co. as a Field Engineer. They hold a BS in Mining Engineering from the Colorado School of Mines, where they studied from 1975 to 1979.
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