2013-04-10_PERMIT FILE - C1981019 ‎(78)‎

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 4/10/2013
• Doc Name: Geology Pre-Feasibility Report
• Section_Exhibit Name: Volume 17 Exhibit 6 Item 7
• Media Type: D
• Archive: No

Collom Area Geology Pre - Feasibility Report
Table 8.4
Estimated Recoverable Coal Reserves of the Collom Mine Area
Proven +
Resource Area Proven Probable Probable Inferred Total
Controlled Reserves 60,110 6 60,116 60,116
Uncontrolled Reserves 81,282 15,677 96,958 227 97,185
Total Collom Mine Area 141,392 15,683 157,075 227 157,302
Note: The Reserve Base is comprised of the sum of proven and probable reserve estimates.
The estimated product coal quality of the CMA Reserve Base (proven and
probable reserve estimates) is:
Quality Parameter Estimated Value
Product Moisture % 16.22
Ash % 6.44
Heat (Btu /Ib) 10,450
Total Sulfur % .47
Ash Fusion Temp. 2,499
August 2005 Page 38 of 38