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<br />TOTAL IN-PLACE COAL RESERVES
<br />WESTERN FUELS-UTAH, INf,. BUREAU OF LAND MANAGEMENT PERCENT
<br />COAL SEAM ESTIMATE (TONS) ESTIMATE (TONS) DIFFERENCE
<br />B 112,469,000 tons 99,176,487 tons 10.2
<br />C 59,327,000 tons 54,060,199 tons 6.2
<br />NOTE: Western Fuels-Utah, Inc. reports more coal than the BLM estimate
<br />for both seams.
<br />Tne mineable reserve base ano recoverable reserve base ryas calculated on a
<br />lease by lease oasis by a staff mining engineer.
<br />MINEABLE RESERVE BASE ESTIMATE
<br />B SEAM
<br />WESTERN FUELS-UTAH, INC. BUREAU OF LAND MANAGEMENT PERCENT
<br />LEASE N0. ESTIMATE (TONS) ESTIMATE (TONS) DIFFERENCE
<br />C-023703 19,813,000 21,701,608 9%
<br />D-047201 5,773,000 6,052,886 5%
<br />C-0126669 2,229,000 2,149,002 4%
<br />C-8424 42,158,000 42,885,812 2%
<br />-8525 12,945,000 13,232,214 2%
<br />ota ,
<br />Variation from BLM calculations range: (2%-9%)
<br />Mean Variation: 4.4%
<br />Standard Deviation: 2.88%
<br />D SEAM
<br />WESTERN FUELS-UTAH, INC. BUREAU OF LANG MANAGEMENT PERCENT
<br />LEASE N0. ESTIMATE (TONS) ESTIMATE (TONS) DIFFERENCE
<br />C-023703 27,283,000
<br />D-047201 6,529,000
<br />C-0126669 2,746,000
<br />C-8424 3,137,000
<br />C-8425 5,333,000
<br />* Actually .4%, rounded to 0$
<br />Variation from BLM calculations
<br />Mean Variation: 2.6%
<br />Standard Deviation: 7_.07%
<br />27,000,988 1%
<br />6,765,773 3%
<br />2,733,359 0%*
<br />3,261,930 4%
<br />5,619,800 5%
<br />--•,
<br />range: (0-5%)
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