2010-04-26_PERMIT FILE - C1980007A ‎(7)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 4/26/2010
• Doc Name: Laboratory Test Data
• Section_Exhibit Name: Exhibit 82 Appendix B
• Media Type: D
• Archive: Yes

Direct Shear Test Job No.: 7112
ASTM: D3080
Project: West Elk Mine PR -2 Conveyor and Prep Plant - # 06261004
oring No.: SB09 -11 Sample No. Depth: 7.5 -9.5 Test Date: 8/27/2009
ocation: Sample Type: SS Date Reported: 9/2/2009
Soil Type: Mixture of Coal and Mineral Soil Shear Rate
0.00315 (in/min)
Remarks: Specimen reconstituted to given density at as received moisture content using 410 material;
Inundated after applying normal load; Allowed to consolidate 1 hour.; Sheared to given displacements at constant Liquid Limit:
rate of 0.00315 " /min..
Plastic Limit:
Plasticity Index:
Specific Gravitv: 1.66
0
-5
-10
c
0
-15
N
U)
m
Y -20
Q
L
H
S -25
d
cc rn
e
v -30
-35
-40
2.5
0 0.1 0.2 0.3 0.
2
w 1.5
N
m
a� 1
t
N
0.5
Failure Criterion:
Max Shear Stress
Initial
X
2.5
N
2
t
N
2
N 1.5
A
m
t
N
1
0.5
I�
011
0
0
000
o
0.1 0.2 0.3 0: 0 0.5 1 1.5 2 2.5 3
Shear Displacement (inch) Normal Stress (TSF)
OIL
9301 Bryant Ave. South, Suite 107 NGINEERING Bloomington, Minnesota 55420 -3436
T ESTING, INC.
Diameter In.1
2.50
2.50
1 2.50
Thickness (In.)
0.82
0.82
0.82
Water Content M)
10.9
10.9
10.9
Dry Density (pcf)
53.8
53.8
53.8
Before Shear
Thickness (in.)
1 0.64
1 0.60
0.58
Water Content ( %)
31.0
25.1
21.8
Dry Density (pcfl
68.4
73.2
1 76.0
Normal Stress
0.75
1.50
3.00
Shear Stress
0.75
1.37
2.18
"These tests are for informational purposes only and must be reviewed by a
qualified professional engineer to verify that the test parameters shown are
appropriate for any particular design."
Peak Conditions
At Given Shear Disp. Of: 0.3
i
Friction Angle: 31.9 deg.
Apparent 0.342 TSF
Cohesion
Friction Angle: $= 31.8 deg.
Apparent 0.248 TSF
Cohesion
3
2.5
N
2
t
N
2
N 1.5
A
m
t
N
1
0.5
I�
011
0
0
000
o
0.1 0.2 0.3 0: 0 0.5 1 1.5 2 2.5 3
Shear Displacement (inch) Normal Stress (TSF)
OIL
9301 Bryant Ave. South, Suite 107 NGINEERING Bloomington, Minnesota 55420 -3436
T ESTING, INC.