Carlton Tunnel / 8 at portal
Carlton Tunnel. Eight at portal.
Men pose in a maintenance car by the mouth of the Carlton Tunnel in Teller County, Colorado. Mine drainage pipes are by rail tracks; letters read: "1939-1941 Safety First - Carlton Tunnel." Hard hats read: "J. G. Farmer," "D. P. Tanner," "M. Shoup," and "J. R. Austin."