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Drill Hole #775-E (Overburden Core <br />• Nucla Mine, !•bntrose County, Colorado <br /> Date Drilled: 1/30/80 <br />Depth Thickness <br />(Feet) Strata (Feet) <br />0 Dark brown sandy topsoil 0.8 <br />0.8 Yellowish-brown fine rained sandstone 5.6 <br />6.4 Light gray and yellowish-brown clay 1.0 <br />7.4 Firown sandy shale t•rith plant remains. 19.6 <br /> Gypsum filled fractures. (NUPE: change <br /> core diameter from 2-1/8" to 3" at 10.0') <br />22.0 lost 1.0 <br />23.0 Light gray to yellaaish-brown fine rained 12.8 <br /> argillaceous sandstone with gypsum filled <br /> fractures and plant remains. Occasional <br /> thin interbeds of yellowish-brown shale. <br />35.8 Dark gray shale with minor lenses of sand- 2.5 <br /> stone (approximately 0.05 feet thick) <br />38.3 Lost 4.2 <br />• 42.5 Dark gray shale 3.9 <br />46.4 Light to dark gray fine-grained sandstone 2.4 <br /> with pyrite nodules (approximately 0.02 foot <br /> diameter) <br />48.8 Coal Rider 1.5 <br />50.3 Dark gray shale with gypsum filled fractures 2.8 <br />53.1 Coal 2.3 <br />55.4 Sandstone #1 (U. Dakota) 0.1 <br />55.5 Coal 0.2 <br />55.7 Shale 0.1 <br />55.8 Sandstone 0.2 <br />56.0 Light to dart' gray fine-grained argillaceous 4.0 <br /> sandstone with dark shale laminae - abundant <br /> plant remains <br />60.0 Lost 0.7 <br />60.7 Light gray to near white fine-grained sand- 0.9 <br /> stone (NUPE: Change core diameter fran 3" <br /> to 2-1/8" at 60.7 feet) <br />61.1 Dark gray shale and sandy shale 1.8 <br />• <br />6-1-39 <br />