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Figure 7. Chronology of development drilling during 1993 and 1994. A. Locations of previously completed wells in Moore-Johnson field area and wells drilled in 1993 and 1994. Circled reference numbers refer to corresponding sections in text. B. Contour map of ethane magnitudes showing geochemical basis for selection of development well locations. (Well locations modified from Bowen and Weimer, 2003, and Kansas Geological Survey, 2003.)