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~,e~:isea August l.i, .~;;;,, <br />northwest so gently that from the apex of the fold to Mann Draw <br />this axis nearly parallels the surface of the ground. <br />Structural contours on the top of the Sudduth, the lower seam, <br />which are based on field mapping and 39 drill holes, are shown in <br />Plate 2. Cross-sections of these strata are shown in Plate q, <br />Folding. The syncline cropping out on the Bourg property is <br />a small down-fold on the northeast limb of the D7cCallum anticline, <br />a northwest trending upfold 9~, miles long by 2~ miles wide, which <br />produces oil and COZ gas within a half a mile of the Bourg property. <br />The Bourg syncline dips as much as 91 degrees on the southwestern <br />limb, 8 to 15 degrees on the northeastern limb, and has a plunge of <br />4 to 8 degrees to the northwest. <br />Faulting. Plate 2 shows three faults; two normal and one revers- <br />It is highly possible that mining will reveal additional, smaller <br />faults. Naturally, the mining plan is designed to minimize the <br />inconvenience of these faults. <br />Overburden. "The definition of "representative" overburden <br />would include all materials removed t.o access a coal seam. These <br />materials would include parent materials (rocks) and overlying soils. <br />Our job as per \1LRB (Carol Polke) direction was to obtain "soil" <br />cores of the representati~re soil t}=pes, as identified by field <br />observation and SCS Soil Survey, on the proposed mine site, These <br />cores were divided by visible soil horizons and analyzed for <br />cf~emical properties." John Havlin-.Colorado State University, Ft. <br />Collins, Colorado. <br />w <br /> <br /> <br />n <br />C-7 <br />.,~. <br />