2011-09-30_PERMIT FILE - C1980007A ‎(6)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 9/30/2011
• Doc Name: Boring Logs
• Section_Exhibit Name: Exhibit 82 Appendix A
• Media Type: D
• Archive: Yes

Barr Engineering Company
4700 West 77th Street
BARR Minneapolis, MN 55435 -4803 LOG OF BORING B -6
Sheet 3 of 3
Project: Proposed RPE Expansion
Location: West Elk Mine, Somerset,
Client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
y
TEST DATA
DENSITY
w
a�
S'
as
N in blows /ft m
(pcf) it
MATERIAL DESCRIPTION
0 a
> 0
10 20 30 ao
105 Its 125
o
(ASTM D2488)
n
cc
1
z
F: it
m
STRENGTH, ksf
Water Content, %
w
ern
/SHEAR
` P x UC o TV X
WP WN WL
VS o VSR O
1 2 3 4
20 40 60
60
SANDSTONE Light grey /grey fine to medium grained sandstone
••
with minor tan rusting and brown clay seams no more than 2"
thick.
::
90%
6505
65
.....
89%
A NEF----------------- - - - - --
SANDSTONE Tan grey sandstone with coal seams. 65.7
• .
----------------------- - - - ---
.....
51%
6500
SANDSTONE Rusted sandstone. 67.4
---------------------------- -.....
SANDSTONE Light grey fine grained sandstone interbedded 69.0
70
with shale.
---------------------------- -.....
SANDSTONE Tan grey fine grained sandstone. 70.7
72%
6495
---------------------------—.....
SANDSTONE Brown -grey fine to medium grained sandstone. 7T
100%
74.5
75
80
85
90
Completion Depth: 74.5
Remarks:
Date Boring Started: 6/20/09
Date Boring Completed: 6/22/09
SAMPLE TYPES
WATER LEVELS
Logged By BSE
Auger Cutting ,Shelby Tube
While Drilling.
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
Northing: 402144.6
® Split Spoon n Rock Core
End of Drilling:
Eastm : 1450500.2
hrs After Drilling:
The stratification lines represent approbmate boundaries. The transition may be gradual.