735Bb18: "Rig of A.H. Masiran, Pueblo, Jan 1931. On Thatcher wells 5 miles e of Boone"
Two men stand near sand bucket on mud-spattered drilling rig. Foreground is littered with dirt piles and unattached well drilling equipment. Image also used as Figure 16, "Lever-arm method of forcing casing. Ten-inch sand pump on drilling line. At lower left is turntable for soil auger," in "Construction of Irrigation Wells in Colorado" by W. E. Code.