PERMFILE42054

• Permit No: C1981012A
• IBM Index Class Name: Permit File
• Doc Date: 3/6/2007
• Section_Exhibit Name: Exhibit 28 Appendix B
• Media Type: D
• Archive: Yes

CIRCES Cost Estimating Software
• BULLDOZER WORK
PROJECT IDENTIFICATION
Task # : 002 State :Colorado PermiUjob# : C-1981-012
Date : 11/08/2006 County :Las Animas Abbreviation :none
User : JRS Site :New Elk Mine Filename : C012-002
Agency or organization name :Colorado Division Of Minerals And Geo/og.
Permit or otherjob action :Partial Phase I Bond Release SL-02
Task description : Backfill and Grade West Portal Area
HOURLY EQUIPMENT COST
Basic machine :Cat D9R - 9SU (2005) Horsepower : 405
Blade type :Semi-Universal
Attachment no. 1 :ROPS Cab Shift basis : 1 perday
Attachment no. 2 :3-shank ripper
Data source : (CRG)
Utilization
Cost Breakdown : Ownership cosUhour : $72.92 NA
OperatingcosUhour : $98.84 100
Ripper op.cosUhour : $0.00 0
Operator cosUhour : $32.78 NA
Total unit cosUhour : $204.53 Total fleet cosUhour : $613.60
MATERIAL QUANTITIES ~~
Initial Swell Loose
volume : 11,760 CCY factor : 1.125 volume : 13,230 LCY

Source of estima ted volume :Map 17
Source of estimated swell factor :CAT Handbook

HOURLY PRODUCTION Job Condition Correction Factors Source
Operator skill : 0.75 (avg.)
Average push distance : 200 feet Material consistency : 0.90 (Cat HB)
Unadjusted hourly production : 700.0 LCY/hr Dozing method : 1.00 (gen.)
Visibility : 1.00 (avg.)
Material consistency description : Job efficiency : 0.83 (1 shiff/day)
Compacted fill orembankment Spoil pile : 0.80 (fnd-rf)
Push gradient : 0.90 (Cat HB)
Average push gradient : 5.00 % (pos) Altitude : 1.00 (Cat HB)
Average site altitude : 7,500 feet Material weight : 0.87 (Cat HB)
Blade type : 1.00 (S/SU/U)
Material weight : 2, 650 Ibs/LCY Net correction : 0.35
Weight description
Decomposed rock - 25% Rock, 75% Earth
JOB TIME AND COST
• Fleet size : 3 Dozers)
Unit cost : $0.832 /LCY
Adjusted unit production
Adjusted fleet production
Total job time
Total job cost
~X Z 8 g ~6 11~3~06 SL O L