2007-08-17_PERMIT FILE - C1981035 ‎(39)‎

• Permit No: C1981035
• IBM Index Class Name: PERMIT FILE
• Doc Date: 8/17/2007
• Doc Name: Geological and Hydrologic Data
• Section_Exhibit Name: KI Appendix 04
• Media Type: D
• Archive: No

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ESTIMATED RESERVE CALCULI?IONS $Y 40-ACME TRACTS (SEE FIG. 1 AND CHAR? 2~-- '
• Tract 1 (north tract)--Coal bed 1 is inferred to contain•40 acres of "measured"
coal 5.8 feet thick totaling 417,600 tons.
Coal bed 2 is inferred to contain 32 acres of "measured" coal 5 feet thick
totaling 288,000 tons; and 8 acres of "indicated" coal S feet thick totaling
72,000 tons.
Total estimated coal reserves in beds 1 and 2 ~ 771,600 tons of "demonstrated"
coal underlying tract 1 of lease application area C-29125.
Tract 2 (middle tract)--Coal bed 1 is inferred to contain 23 acres of "measured"
coal 5.8 feet thick totaling 240,120 tons; and 17 acres of "indicated" coal 5.8
feet thick total 177,480 tons, for a total of 417,600 tons of "demonstrated" coal
reserves in coal bed 1.
Coal bed 2 is inferred to contain 1 sere of "measured" coal S feet thick totaling
9,000 tons; and 39 acres of "indicated" coal S feet thick totaling 351,000 tone.
Total estimated coal reserves in beds 1 and 2 underlying Tract 2 ~ 777,600 tons
of "demonstrated" coal.
Tract 3 (south tract)--Coal bed 1 is inferred to contain 40 acres of "indicated"
coal 5.8 feet thick totaling 417,600 tons.
Coal bed 2 is inferred to contain 40 acres of "indicated" coal S feet thick
totaling 360,000 tons.

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Total estimated coal reserves in Tract 3 ~ 777,600 tons of "demonstrated" coal.
CONCLUSIONS--Toro minable coal beds totaling about 10.8 feet thick, are inferred
Co underlie the lease application area. Total demonstrated 'reserves are calcu-
lated to be 2,332,800 tons of "measured" or "indicated" coal: Recoverable coal
is estimated at 1,166,400 tons. •.
$O~~ 4 !to/ ~.c ! Fiot rs is.
REFERENCES-- -
Averitt (1969), Coking coal deposits of the United States: U.S. Geological
Survey Bull. 1222-C.
Bass (1969), Classifi-cation of coal lands in T. 35 N., R. _11 W., NMPM: Colorado
Coal Land Minutes No. 249, U.S. Geological Survey, Conservation Division,
Adm. Report.
Berryhill (1951), Coking coat deposits of the Western United States: U.S.
Geological Survey Circ. 90.
Boreck (1979), Colorado coal depletion data, and coal mine summaries: CGS
Open-File Report.
Brown (1954), Carbonizing properties of American•eoals: U.S. Bureau of dines
Bull. 536.
Colorado Div. Mines (1935-1979), Colorado coal mine inspection reports. •
Cross (1899), La Plata folio: U.S. Geological Survey Atlas No. 6n.
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November 1993