2011-10-17_REVISION - M1977215

• Permit No: M1977215
• IBM Index Class Name: REVISION
• Doc Date: 10/17/2011
• Doc Name: TR-18 approval
• From: DRMS
• To: Rio Grande Silver, Inc.
• Type & Sequence: TR18
• Email Name: RCO
• Media Type: D
• Archive: No

PROJECT IDENTIFICATION
Task _# : 006
Date : 10/17/2011
User : RCO
Agency or organization name :DRMS
Permit or other job action :9400 portal, TR -18
Task description :Replace topsoil on disturbed areas
HOURLY EQUIPMENT COST
Cost Breakdown :
MATERIAL QUANTITIES
Initial
volume : '3,000
Source of estimated volume :5.6 acres disturbance x 4 inch avg depth
Source of estimated swell factor :na
HOURLY PRODUCTION
Average push distance : 100 feet
Unadjusted hourly production : 1,243.2 LCY /hr
Material consistency description :
Partly consolidated stockpile
Average push gradient : 5.00 % (neg)
Average site altitude : 9,400 feet
Material weight :
Weight description :
Earth - Dry packed
JOB TIME AND COST
Fleet size :
Unit cost :
CCY
CIRCES Cost Estimating Software
BULLDOZER WORK
State : Colorado
County :Mineral
Site :Bulldog Mine
Basic machine : Cat D9R - 9SU (2005)
Blade type : Semi - Universal
Attachment no. 1 :ROPS Cab
Attachment no. 2 :3-shank ripper
Ownership cost/hour :
Operating cost/hour :
Ripper op. cost/hour :
Operator cost/hour :
Total unit cost/hour :
2,550 lbs/LCY
1 Dozer(s)
$0.355 /LCY
Swell
factor :
$67.77
$95.29
$0.68
$38.54
$202.28
Permit/job# :M- 1977 -215
Abbreviation :none
Filename :M215 -006
Utilization %
NA
100
10
NA
Total job cost : $1,295
Horsepower : 405
Shift basis : 1 per day
Data source : (CRG)
Total fleet cost/hour : $202.28
Loose
1.215 volume : 3,645 LCY
Job Condition Correction Factors Source
Operator skill : 0.75 (avg.)
Material consistency : 1.10 (Cat HB)
Dozing method : 1.00 (gen.)
Visibility : 1.00 (avg.)
Job efficiency : 0.83 (lshift/day)
Spoil pile : 0.70 (fnd -mf)
Push gradient : 1.11 (Cat HB)
Altitude : 0.95 (Cat HB)
Material weight : 0.90 (Cat HB)
Blade type : 1.00 (S /SU /U)
Net correction : 0.46
Adjusted unit production : 569.32 LCY /hr
Adjusted fleet production : 569.32 LCY /hr
Total job time : 6.40 Hours