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• <br />SENECA MINE <br />LOG OF BOREHOLE <br />Bore Hole: M-6 (GW-545) <br />Project: 0260 <br />Date Drilled: 8-3-81 <br />Land Title: Grassy Creek <br />Location: SW, SE Section I, TSN, R87W, Routt County, Colorado <br />Driller: D. Clements <br />TOTAL STRATA THICKNESS <br /> Brown sandstone 12.0 <br /> 12.0 Medium brown sandstone 7.2 <br /> 19.2 Sandy brown shale 0.2 <br /> 19.4 Brown sandstone 1.5 <br /> 20.9 Soft brown shale I .I <br /> 22.0 Brown medium sandstone 0.3 <br /> 22.3 Brown sandy shale 3.5 <br /> 25.8 Core Lost 3.4 <br />• 29.2 <br />30.6 Gray shale <br />Gray medium sandstone 1.4 <br />6.9 <br /> 37.5 Gray sandy shale 3.2 <br /> 40.7 Gray shale 1.7 <br /> 42.4 Core Lost 0.4 <br /> 42.8 Black shale 0.3 <br /> 43.1 Coal 9.4 <br /> 52.5 Black shale 0.8 <br /> 53.3 Medium sandstone 1.8 <br /> 55.1 Gray sandy shale 0.1 <br /> 55.2 Medium sandstone 0.1 <br /> 55.3 Gray shale 2.0 <br /> 57.3 Black shale 0.3 <br /> 57.6 Medium sandstone 3.3 <br /> 60.9 Gray shale 2.0 <br /> 62.9 Coal Lost 0.8 <br /> 63.7 Coal I.0 <br /> 64.7 Gray medium sandstone 10.8 <br /> 75.5 Gray shale 0.2 <br /> 75.7 Medium sandstone 0.8 <br /> 76.5 Gray sandy shale 5.5 <br /> 82.0 Gray shale 2.1 <br /> 84.1 Siltstone 0.2 <br /> 84.3 Gray shale 3.6 <br /> 87.9 Core Lost 0.4 <br />• 88.3 <br />92.0 Gray shale <br />Black shale 3.7 <br />0.4 <br /> 92.4 Gray sandy shale 7.3 <br /> 99.7 Medium sandstone 2.3 <br /> 102.0 Gray sandy shale 5.3 <br />6-37n NOY $ 3 19p~ <br />