2015-04-03_REVISION - C2009087

• Permit No: C2009087
• IBM Index Class Name: Revision
• Doc Date: 4/3/2015
• Doc Name: Adequacy Review No. 1
• From: DRMS
• To: Peabody Sage Creek Mining, LLC
• Type & Sequence: RN1
• Email Name: JLE
• Email Name: DIH
• Media Type: D
• Archive: No

Page 4 of 138
Truck Bed (volume) Basis:
Truck
Loader
Struck Volume:
21.60
LCY
Heaped Volume:
31.70
LCY
Average Volume:
26.65
LCY
Adjusted Volume:
30.94
LCY
Final
Truck Volume
Based on Number of Loader Passes: 30.36 LCY
Loading Tool Capacity
(Cat HB)
Dump Target:
Nominal target 0.00
0.000
Bucket Size Class: NA
Rated Capacity: 9.200 LCY (heaped)
Bucket Fill Factor: 0.825 Blasted rock - avg. blasted (75 - 90 %) 0.825
Adjusted Capacity: 7.590 LCY
Job Condition Corrections: Site Altitude (ft.): 6800 feet
Net Correction: 0.830 0.830
Loading Tool Cycle Time: Number of Loading Tool Passes Required to Fill Truck:
Excavators and Front Shovels:
Machine Cycle Time vs. Job Condition Rating: NA
Selected Value within this Basic Rating: NA
Track Loaders — Material Description:
Cycle Time Elements (min.):
Load: NA Maneuver: NA Dump: 0.100
Wheel and Track Loaders - Unadjusted Basic Loader Cycle Time (load, dump, maneuver): 0.575 minutes
4 passes
Cycle Time Factors
Truck
Loader
Source
Altitude Adj:
1.000
1.000
(CAT HB)
Job Efficiency:
0.830
0.830
(CAT HB)
Net Correction: 0.830 0.830
Loading Tool Cycle Time: Number of Loading Tool Passes Required to Fill Truck:
Excavators and Front Shovels:
Machine Cycle Time vs. Job Condition Rating: NA
Selected Value within this Basic Rating: NA
Track Loaders — Material Description:
Cycle Time Elements (min.):
Load: NA Maneuver: NA Dump: 0.100
Wheel and Track Loaders - Unadjusted Basic Loader Cycle Time (load, dump, maneuver): 0.575 minutes
4 passes
Cycle Time Factors
Factor (min.)
Source
Material:
Mixed material 0.02
0.020
(Cat HB)
Stockpile:
Conveyor or dozer piled 10 ft. high and up 0.00
0.000
(Cat HB)
Truck Ownership:
Common ownership of trucks and loaders -0.04
-0.040
(Cat HB)
Operation:
Constant operation -0.04
-0.040
(Cat HB)
Dump Target:
Nominal target 0.00
0.000
(Cat HB)
Truck Cycle Time:
Truck Exchange Time: 0.60
Truck Load Time: 1.645
Truck Maneuver and Dump Time: 1.00
Truck Travel (Haul & Return) Time:
maintained 3.0
Net Cycle Time Adjustment:
Adjusted Loader Cycle Time:
Net Load Time per Truck:
-0.060 minutes
0.515 minutes
1.645 minutes
Minutes Adjusted for site altitude: 0.600 Minutes
Minutes Adjusted for site altitude: 1.645 Minutes
Minutes Adjusted for site altitude: 1.000 Minutes
Road Condition: Firm, smooth, rolling, dirt /lt. surfaced, watered,
CIRCES Cost Estimating Software