735Ba96: "Rotating table. Denver Pump Co. rig, Round 6 inch drill stem held by friction by wood clamp as shown. Floyd Cross well, Ft. Collins"
Second print caption reads, "Floyd Cross test hole Denver pump Mtg. Co. March 21, 1941. This is a coring method, pipe is rotated. Clay removed with special bucket with side holes, gravel with piston bucket. Auger used thru first soil and clay. N.W. cor 28. 8-68"