REV06840

• Permit No: C1980007
• IBM Index Class Name: Revision
• Doc Date: 11/30/1995
• Doc Name: FACTOR OF SAFETY SUMMATION FOR THE PARKING LOT EXTENSION AT THE WEST ELK MINE
• From: HARDING LAWSON ASSOCIATES
• To: MTN COAL CO
• Type & Sequence: MR174
• Media Type: D
• Archive: No

1 113.33
2 122.87
3 132.64
4 142.57
5 152.57
6 162.55
7 172.42
8 182.11
9 191.52
10 200.59
11 209.22
12 217.35
13 224.90
14 231.82
15 238.03
16 243.49
17 245.33
Circle Center At X
*** 1.304
110.00
106.99
104.87
103.67
103.40
104.05
105.62
108.10
111.47
115.70
120.74
126.57
133.12
140.35
148.18
156.56
160.05
150.5 Y = 211.2 and Radius, 107.8
***
Failure Surface Specified By 17 Coordinate Points
Point X-Surf Y-Surf
No. (ft) (ft)
1 100.00 110.00
2 109.62 107.27
3 119.43 105.33
4 129.37 104.20
5 139.36 103.88
6 149.35 104.38
7 159.26 105.69
8 169.03 107.81
9 178.60 110.72
10 187.90 114.40
11 196.87 118.83
12 205.44 123.98
13 213.57 129.81
14 221.19 136.28
15 228.26 143.35
16 234.72 150.98
17 240.44 158.96
Circle Center At X = 138.2 Y = 226.2 and Radius, 122.4
* ** 1.313 ***
1
Failure Surface Specified By 18 Coordinate Points