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"
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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"