2010-12-17_REVISION - C1981019 ‎(130)‎

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 12/17/2010
• Doc Name: Exhibit 6 Item 7 Geology Pre-Feasibility Part 2
• Type & Sequence: PR3
• Media Type: D
• Archive: No

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CONTENTS
Page
EXECUTIVE SUMMARY ..............................
REPORT SUMMARY ..... ...............................
1 Introduction ........... ...............................
2 Major Findings ...... ...............................
2.1 Colowyo Cost Ranking Study (CRS)
2.2 Collom Project Economics ...............
2.3 Resource Assessment .....................
2.4 Mine Planning ... ...............................
2.5 Infrastructure .... ...............................
2.6 Study Management .........................
3 Methodology ......... ...............................
4 Future Actions ....... ...............................
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List of Figures
Figure 1 -1: Colowyo Coal Company Resource Areas .............................. ..............................3
Figure 2 -1: Comparison of Total Moisture by sampling campaign ............ ..............................8
Figure 2 -2: Dry Ash vs Dry ASG from recent Collom core analyses ......... ..............................8
Figure 2 -3: Magnetic Survey Diagnosis of Burnt Coal Zones .................. .............................11
List of Tables
Table 2 -1: Colowyo Open Cut Resource Options (from CRS, 2003) ........ ..............................5
Table 2 -2: Relative Density Reported at Varying Moisture Bases ............. ..............................9
TS Ref: DRAFT Version: 1
RIO
TINTO
Technical Seivices