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 #310B
Nucla Mine, Montrose County, Colorado
'Date Drilled: 9/29/73
Depth Thickness
(Feet) Strata (Feet)
0 Shale 0.5
0.5 Smut #1 (U. Dakota) 1.5
2.0 Shale 1.0
3.0 Sandrock 2.4
5.4 Dark shale 3.0
8.4 Smut - coal 2.0
10.4 Coal 1.0
11.4 Shale #2 (L. Dakota) 0.2
11.6 Coal 4.0
15.6 Shale 0.4
16.0 Sandstone and shale 5.0
21.0 Shale 3.5
24.5 Very hard rock 3.0
27.5 Shale 2.1
39.6 Coal 1.4
41.0 Dark shale 0.3
41.3 Coal #3 (Nucla) 0.6
41.9 Dark shale - slate 1.7
43.6 Coal 1.0
44.6 Dark shale 0.5
45.1 Hard sandstone - rock 1.9
47.0 Sandstone 30.7
77.7 Slate 2.0
79.7 Shale 0.4
80.1 Sandy sandstone 0.9
81.0 Hard sandstone 2.4
83.4 Shale 1.9
85.3 Hard sandstone 1.7
87.0 Shale with hard streaks 11.0
98.0 Hard rock: 2.0
100.0 TOTAL DEF'TII
6-1 -20