PERMFILE54413

• Permit No: C1981011
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: RULE 2.04.6 GEOLOGY
• Media Type: D
• Archive: No

. ROCK QUALITY DESIGNATION(1)
CORE SAMPLES OF ROOF S FLOOR MATERIAL
TAKEN FROM DRILL kOLE SL-21
I~
L
Core Run
Material Interval Length
Roof Zone 3 210'-213.67' 44"
Floor Zone 3 224'-230' 72"
Roof Upper Pinnacle 405'-408.17' 38"
Floor " 412.42'-415' 31"
Roof Lower Pinnacle 432'-455.08' 277"
Floor " " 459.83'-469' 110"
Modified(2)
Recov ery Recovery R.Q.D.
Inches X Inches RQDX Descripilon
44" 100X 43" 97.7X Excellent
72" 100X 13" 18. 1X Very poor
38" 100X 27" 71.1X Fair
31" 100X 11" 35.5% Poor
249" 89.9% 152.5" 55. 1X Fair
103" 93.6X 71" 64.SX Fair
(1) Rock Quality Designation (R.Q.D.) - method of classifying in-situ rock
based on core logging.
0-25X - very poor
25-SOX - poor
50-75X - fair
75-90X - good
90-100X - excellent
Source: SME Mining Engineering Handbook, Volume 1, Page 6-17;
(Society of Mining Engineers of the American Institute of
Mining, Metallurgical, and Petroleum Engineers, Inc.)
•~.

(2) Length of pieces intact core 4" or greater.
46
D. H. EMLING COMPANY