. Early geophysical papers of the Society of Exploration Geophysicists . Fig. 7.—Resistivity contours, Anderson County, Kansas, area. on the contour map for the .' set-up. Upon further lengthen- ing the spread, the presence of another insulator is indicated. A well drilled on the south side of Section 10, with the exception of a very slight showing of gas at 550 feet, was abandoned at a total depth of 736

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