2010-04-26_PERMIT FILE - C1980007A ‎(6)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 4/26/2010
• Doc Name: Boring Logs
• Section_Exhibit Name: Exhibit 82 Appendix A
• Media Type: D
• Archive: Yes

•
c
z
0
M
Barr Engineering Company
4700 West 77th Street
BARR Minneapolis, MN 55435 -4803 LOG OF BORING B -3
Sheet 2 of 4
Project: Proposed RIDE Expansion
Location: West Elk Mine, Somerset,
client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
y
TEST DATA
DENSITY
o
o
N in blows /ft @
(pco
o
t
MATERIAL DESCRIPTION
J
n > 0
10 20 30 40
105 115 125
m
c
(ASTM D2488)
a
z
�
>
O
m
d
SHEAR STRENGTH, ksf
Water Content, %
W
C7
E N
O X UC A TV )K
WP WN WL
y
VS A VSR O
1 2 3 4
20 40 60
30
SILTSTONE Light grey /grey siltstone with fine sand inclusions.
X X
M 50/
5013
x x
x X
3
»
6335
x x
X
X
X
X
X x
x X
X X
X X
35
x x
>>@
50/4
X X
50/
Xx
4
6330
X X
X X
X
X
X x
X x
50/
»
50/1
SANDSTONE Grey sandstone with minor coal dust. Minor 39.0
40
layers of siltstone. Some Gay infilling. Minor pyrite present in
small dykes.
6325
..
94%
45
6320 —
37.5
50
6315
;
7.5
55
100%
6310
93%
60
Continued Next Page
k4
Completion Depth: 100.0
Remarks:
Date Boring Started: 6/18/09
Date Boring Completed: 6/19/09
SAMPLE TYPES
WATER LEVELS
Logged By. BSE
m Auger Cutting 'Shelby Tube
While Drilling:
Drilling Contractor. Haztech
Drilling Method: HSA/CORE
Northing: 402650.2
®Split
End of Drilling:
Eastin : 1450672.6
Spoon Rock Core
S[ hrs After Drilling: 75.28
I ne stratitication lines represent appro)amate boundaries. The transition may be gradual.