2012-08-13_PERMIT FILE - M1980244

• Permit No: M1980244
• IBM Index Class Name: Permit File
• Doc Date: 8/13/2012
• Doc Name Note: Adequacy Review Response
• Doc Name: Adequacy Review Response
• From: AngloGold Ashanti North America
• To: DRMS
• Media Type: D
• Archive: No

GRAINSIZE ANALYSIS OF RUN-OF-MINE ROCK
Sieve Size Percentage Passing Sieve Grainsize Diameter(mm)
(in) Test 1 Test 2 Test 3 Average 2500 250 25 2.5
75 100.00 100.00 100 100.00 100
50 100.00 100.00 100 100.00 \
25 98.19 99.39 98.52 98.70
15 89.80 94.79 93.87 92.82 90
10 75.79 85.35 86.34 82.49
8 66.85 78.85 79.9 75.20
6 55.80 69.36 68.88 64.68
4 43.40 55.00 52.28 50.23 80
2 28.64 35.35 33.3 32.43
1.5 23.28 30.04 27.77 27.03
1 17.38 23.80 21.48 20.89 70
0.75 14.12 20.26 17.9 17.43
0.5 10.53 16.08 13.83 13.48
0.375 8.55 13.65 11.52 11.24
0.25 6.38 10.86 8.92 8.72 co 60
0.187 5.18 9.22 7.42 7.27 .v)-
c N \
0.0787 2.81 5.75 4.36 4.31 1n
as
Notes:
1.Test samples comprised 10-truck loads of run-of-mine blasted rock. c 50
a
2.Samples are of run-of-mine rock delivered to the crusher(ore). c
3.Size analysis performed by Spit Engineering,Inc.using visual imaging. i
4.Samples taken and imaged on May 25,2005. d 40
a
HYDRAULIC CONDUCTIVITY OF RUN-OF-MINE ROCK
Hazen Equation: 30
K=C D102
where: K=hydraulic conductivity(cm/sec) 20
D10=diameter which 10%of particles are finer than(mm)
C=Constant:
\\IIIIII.IIIII9
Very fine sand,poorly sorted 0.4-0.8
Fine sand with appreciable fines 0.4-0.8 10 `
Medium sand,well sorted 0.8-1.2 `\
Coarse sand,poorly sorted 0.8-1.2
Coarse sand,well sorted,clean 1.2-1.5
100 10 1 0.1 0.01
Test 1 2 3 Average Grainsize Diameter(inch)
D10(inch) 0.47 0.22 0.30 0.31
D10(mm) 12 6 8 8
K(cm/s) 140 30 59 63 tTest 1 -IP-Test 2 - -Test 3
References: Scale: None Cresson Project MLE2 Adequacy Review Responses
1.Hazen,Allen,1893.Some Physical Properties of Sands and Gravels,Mass.State Board Drawn: A.Brown PLATE 2
AdrianBrown of Health,24th Annual Report. Date: 10-Aug-2012
Adrian er"M,Ca","„,"s,Inc 2.Hazen,Allen,1911.Discussion of"Dams on Sand Foundations",by A.C.Koenig, File: D:\Docpmeots\Dropbox\1385_CRI.MLE2\8_Responseto HYDRAULIC CONDUCTIVITY OF OVERBURDEN
ISO w am Ave.Denver co 80223 DRMS\113851 20080201 ABC_Primary Crusher Feed Results-
Trans.ASCE,1911. Folder: o1.xlsxlPlete 2-Overburden K