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• <br /> <br />r <br />LJ <br />Depth <br />(Feet) <br />0 <br />0.5 <br />1.7 <br />3.7 <br />4.4 <br />7.0 <br />15.0 <br />19.0 <br />21.0 <br />27.3 <br />35.0 <br />39.0 <br />45.0 <br />49.0 <br />54.1 <br />56.1 <br />57.9 <br />60.0 <br />62.4 <br />64.0 <br />64.5 <br />69.7 <br />70.0 <br />Drill Hole #594C <br />Nucla Mine, Nbntrose County, Colorado <br />Date Drilled: 2/18/77 <br /> Thickness <br />Strata (Feet) <br />Surface soil 0.5 <br />Hard sandstone - rock 1.2 <br />Clay and rack 2.0 <br />Hard sandstone - rock 0.7 <br />Brown clay and rock 2.6 <br />Frown, gray clay 8.0 <br />Shale and rock 4.0 <br />Brown sandstone 2.0 <br />Gray shale and sandstone 6.3 <br />Brown sandstone 7.7 <br />Gray sandstone and shale 4.0 <br />Hard gray shale 6.0 <br />Hard gray sandstone and shale 4.0 <br />Gray shale 5.1 <br />Coal #1 (U. Dakota) 2.0 <br />Shale 1.8 <br />Hard sandstone 2.1 <br />Dark shale 2.4 <br />Coal 1.6 <br />Shale #,2 (L. Dakota) 0.5 <br />Coal 5.2 <br />Shale 0.3 <br />TCIPAL DEPTH <br />6-1-35 <br />