2025-05-05_PERMIT FILE - C1981010 ‎(32)‎

• Permit No: C1981010
• IBM Index Class Name: Permit File
• Doc Date: 5/5/2025
• Doc Name: Inwall HWM Sequence Analysis
• Section_Exhibit Name: Appendix X-II 534-61
• Media Type: D
• Archive: No

Tonia Perkins
July 31, 2024
Page 9
Agapito Associates, Inc.
Figure 3(c). Recovery Estimates for the Q Seam in N-Pit
Design
Depth of Cover, ft 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13
110 65.1 63.9 62.5 61.2 59.9 58.7 57.7 56.6 55.5 54.5 53.4 52.7 51.7
130 64.2 63.0 61.6 60.3 59.0 57.8 56.8 55.7 54.6 53.6 52.6 51.8 50.9
150 63.3 62.1 60.7 59.4 58.1 56.9 56.0 54.9 53.8 52.8 51.8 51.0 50.1
170 62.1 61.2 59.8 58.5 57.3 56.0 55.1 54.0 53.0 52.0 51.0 50.2 49.3
190 59.4 58.7 58.0 57.4 56.4 55.2 54.3 53.2 52.2 51.1 50.2 49.4 48.5
210 57.0 56.2 55.6 55.0 54.4 53.6 53.1 52.4 51.4 50.4 49.4 48.7 47.8
230 54.7 54.1 53.3 52.5 52.0 51.3 50.8 50.3 49.8 49.3 48.7 47.9 47.1
250 52.9 51.9 51.2 50.5 49.8 49.1 48.6 48.0 47.5 46.9 46.5 46.1 45.5
270 51.7 50.5 49.6 48.7 47.9 47.1 46.5 46.1 45.5 44.9 44.4 44.0 43.4
290 50.4 49.4 48.4 47.4 46.6 45.6 44.9 44.1 43.6 43.1 42.5 42.0 41.6
310 48.7 47.9 47.1 46.2 45.3 44.4 43.7 42.9 42.2 41.5 40.9 40.3 39.7
330 47.2 46.4 45.5 44.8 44.1 43.3 42.5 41.7 41.1 40.4 39.7 39.0 38.5
350 45.9 45.0 44.1 43.4 42.6 41.8 41.2 40.6 40.0 39.2 38.6 38.0 37.3
Coal strength, psi 850 Mining width, ft 11.50 No. web pillars 9
Mining Height, ft
0
10
20
30
40
50
60
70
0 50 100 150 200 250 300 350 400RAW RECOVERY, % DEPTH OF COVER, ft
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
12.5
13.0
Mining
Height,
ft