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• Drill Hole #GW-N2 <br />Nucla Mine, Nbntrose County, Colorado <br />Date Drilled: 3/23/77 <br />Depth Thickness <br />(Feet) Strata (Feet) <br />0 Surface soil 1.0 <br />1.0 Brown clay and sandstone 4.0 <br />5.0 Brown sandstone 1.7 <br />6.7 Damp brown clay 2.3 <br />9.0 Gray shale 1.0 <br />10.0 Smut (#1 - U. Dakota ?) 1.6 <br />11.6 Gray shale 0.7 <br />12.3 Sandstone 1.0 <br />13.3 Shale and sandstone 4.4 <br />17.7 Dark shale 2.4 <br />20.1 Coal 1.5 <br />21.6 Gray shale 0.4 <br />22.0 Coal 2.4 <br />• <br />24.4 4Jet coal #2 (L. Dakota) 1.0 <br />25.4 Dark shale 0.3 <br />25.7 Coal 1.5 <br />27.2 Dark shale 0.8 <br />28.0 Shale and sandstone 0.2 <br />28.2 Hard sandstone 1.2 <br />29.4 Shale aryl sandstone 0.9 <br />30.3 Gray shale 3.1 <br />33.4 Hard sandstone 3.2 <br />36.6 Shale and sandstone 0.8 <br />37.4 Hard sandstone 1.1 <br />38.5 Gray shale 18.0 <br />56.5 Shale and sandstone (water?) 1.5 <br />58.0 TO'PAL DEPTfi <br />NOTE: NJell #GW-N2 mined out. <br />• <br />6-1-43 <br />