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

8 154.03 101.08
9 163.96 102.24
10 173.76 104.22
11 183.36 107.02
12 192.70 110.62
13 201.69 114.98
14 210.30 120.08
15 218.44 125.88
16 226.07 132.35
17 233.13 139.43
18 239.57 147.08
19 245.35 155.24
20 248.62 160.79
Circle Center At X = 145.2 Y 220.0 and Radius, 119.3
*** 1.498 ***
1
Failure Surface Specified By 20 Coordinate Points
Point X-Surf Y-Surf
No. (ft) (ft)
1 80.00 114.52
2 89.69 112.04
3 99.51 110.14
4 109.42 108.85
5 119.40 108.17
6 129.40 108.09
7 139.38 108.62
8 149.32 109.76
9 159,17 111.50
10 168.89 113.84
11 178.45 116.76
12 187.82 120.26
13 196.95 124.33
14 205.83 128.94
15 214,40 134.09
16 222.65 139.75
17 230.53 145.90
18 238.03 152.51
19 245.11 159.58
20 245.58 160.11
Circle Center At X = 125.7 Y = 272.2 and Radius, 164.2
* ** 1.512 ***
Failure Surface Specified By 19 Coordinate Points
Point X-Surf Y-Surf