In 1931 the Gypsy Oil Company (now the Gypsy Division of the Gulf Oil Corporation) drilled a wildcat test in the NE. 14, SW. 14 of Sec. 28, T. 3 N., R. 13 E., Pennington County, South Dakota. The location was 13 miles north and 112 miles east of the town of Wall. The test was commenced on May 2, 1931, and completed on November 11, 1931. Rotary tools were used to a depth of 4,573 feet and cable tools from 4,573 feet to the total depth of 5,001 feet. The elevation, 2,956.8 feet,...

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First page of Log of Wildcat Well in Pennington County, South Dakota<xref ref-type="fn" rid="fn1"><sup>1</sup></xref>: GEOLOGICAL NOTES
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