2011-06-15_REVISION - P2010015

• Permit No: P2010015
• IBM Index Class Name: REVISION
• Doc Date: 6/15/2011
• Doc Name: Approval letter for MD-01
• From: DRMS
• To: Rio Grande Silver, Inc.
• Type & Sequence: MD1
• Email Name: RCO
• Media Type: D
• Archive: No

PROJECT IDENTIFICATION
Task # : 003
Date : 06/03/2011
User : RCO
Agency or organization name :DRMS
Permit or other job action :Modification MD -1
Task description :Pull up material for recontouring pads (2)
HOURLY EQUIPMENT COST
Cost Breakdown :
MATERIAL QUANTITIES
Initial
volume :
807
Ownership cost/hour :
Operating cost/hour :
Operator cost/hour :
Total unit cost/hour :
BCY
Source of estimated swell factor :na
HOURLY PRODUCTION
Job Condition Correction Factors
Site altitude : 11,600 feet
CIRCES Cost Estimating Software
HYDRAULIC EXCAVATOR WORK
State : Colorado
County :Mineral
Site : West Equity Project
Machine description :Cat 320C
$26.97
$32.00
$38.72
$97.69
Source of estimated volume :NOI maps
Unadjusted hourly unit production :
Adjusted hourly unit production :
Adjusted hourly fleet production :
JOB TIME AND COST
Fleet size : 1 excavator(s)
Unit cost :
$0.484 per LCY
Utilization %
NA
100
NA
Permit/job # :P-2010-015
Abbreviation :none
Filename :P015-003
Swell Loose
factor : 1.330 volume : 1,073 LCY
Altitude adjustment :
Job efficiency adjustment :
Net job correction :
292.71 LCY /hour
201.65 LCY /hour
201.65 LCY /hour
Total job time :
Total job cost :
Horsepower: 138
Weight (MT) : 19.70
Shift basis : 1 per day
Data source : (CRG)
Total fleet cost/hour :
0.83
0.83
0.69
5.32
$520
$97.69
Excavator Cycle Time (load bucket, swing loaded, dump bucket, swing empty)
Basic job condition description : AVERAGE
Secondary job condition within basic description : AVERAGE
Cycle time value : 0.28 minutes
Bucket Capacity
Rated bucket capacity : 1.63 LCY (heaped) Bucket size class : medium
Bucket fill factor : 0.85 Hard, tough clay (80% - 90 %)
Adjusted bucket capacity : 1.39 LCY
Source
(Cat HB)
(1 shift/day)
multiplier
hours