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• Drill-hole RB-19 - continued <br /> Depth (ft) <br />Litholoqic description From To <br />Sandstone, yellowish-gray, shaly-------------------------- 95 100 <br />Siltstone, yellowish-gray, shaly-------------------------- L00 105 <br />Siltstone, dark-gray, shaly------------------------------- 105 115 <br />Siltstone, medium- to dark-gray--------------------------- 115 122 <br />Sandstone, pale-yellowish-orange, fine-grained------------ 122 125 <br />Sandstone, medium- [o dark-brownish-gray, silty; pale- <br />yellowish-orange sandstone; dark shale------------------ 125 130 <br />Sandstone, medium- to dark-brownish-gray, silty; carbona- <br />ceous shale and dark siltstone-------------------------- 130 135 <br />Sandstone, light-gray to white, very fine grained, <br />salt-and-PePPeL------------- --------------------------- 135 140 <br />Sandstone, medium-grayish-brown, medium-grained, carbona- <br />• <br />h <br />l <br />------- <br />- <br />------ 45 <br />eeous s <br />a <br />e <br />- <br />------ <br />------------------------ 140 1 <br />Coal; bony coal - Wolf Creek coal bed--------------------- 145 160 <br />Bony coal------------------------------------------------- 160 163 <br />Coal----------------------------------------------------- 163 165 <br />Sandstone, medium-grayish-brown, medium-grained; bony <br />coal---------------------------------------------------- 165 170 <br />Sandstone, medium-grayish-brown, medium-grained; earbona- <br />eeous shale; bony coal---------------------------------- 170 180 <br />Bcny coal, carbonaceous shale, and dark-brown Siltstone; <br />coal--------------------------------------------------- 180 185 <br />Sandstone, Light- to yellowish-orange-gray, fine- <br />grained; carbonaceous shale---------------------------- 185 190 <br />18 <br />• <br />