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<br />• <br />r1 <br />LJ <br />Drill Hole #3C - Overburden <br />Depth <br />(Feet) Strata <br />66.7 Shale <br />67.8 Coal <br />69.4 Shale and coal <br />69.5 Coal <br />69.7 Dark shale & coal <br />70.0 Shale <br />70.3 Sandstone <br />71.0 Shale & sandstone <br />73.4 Sandstone <br />74.6 Shale and sandstone <br />76.7 Sandstone and coal <br />77.2 Coal <br />78.4 Shale <br />78.7 Coal <br />84.3 Shale with opal <br />84.9 Shale and sandstone <br />89.3 TUPAL DEP'T'H <br />#1 (U. Dakota) <br />#2 (L. Dakota) <br />6-1-9 <br />Thickness <br />(Feet) <br />1.1 <br />1.6 <br />0.1 <br />0.2 <br />0.3 <br />0.3 <br />0.7 <br />2.4 <br />1.2 <br />2.1 <br />0.5 <br />1.2 <br />0.3 <br />5.6 <br />0.6 <br />4.4 <br />