1988-04-11_PERMIT FILE - C1981008A ‎(6)‎

• Permit No: C1981008A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/11/1988
• Doc Name: Lithologic Descriptions of Core and Bore Holes
• Section_Exhibit Name: Tab 6 Exhibit 4-1
• Media Type: D
• Archive: Yes

Drill Hole #253B
Nucla Mine, Montrose County, Colorado
Date Drilled: 7/12/72
Depth Thickness
(Feet) Strata (Feet)
0 Clay - damp 18.6
18.6 Sandstone - hard 4.9
23.5 Shale - damp 12.5
36.0 Coal Rider 0.3
36.3 Shale - dark 2.7
39.0 Sandstone - hard 0.9
39.9 Shale - dark 1.9
41.8 Slate 0.5
42.3 Coal #1 (U. Dakota) 1.7
44.0 Shale 0.5
44.5 Sandstone - hard 1.0
45.5 Sandstone and shale 0.9
46.9 Sandstone - hard 1.8
48.2 Shale - dark and slate 2.8
51.0 Coal 0.6
51.6 Shale 0.2
51.8 Coal #2 (L. Dakota) 0.9
52.7 Shale 0.7
53.4 Coal 5.2
58.6 Slate 0.4
59.0 Sandstone 1.0
60.0 TOTAL DEPTH
6-1 -1 1