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vvi�r iu ciri •ru, •i�r�n. u�ilv.� <br />Page Three <br />• An average density of 90 pounds per cubic foot (1960 lbs/acre foot) was <br />calculated from sample analysis of drill holes. <br />The coal reserves were then calculated using the density, the average thickness <br />of the seam, and the areal influence of the drill holes. <br />The areal influence of the drill holes was found by using criteria from <br />General Mining Order No. 1 as follows: <br />Measured - 1/4 mile radius <br />Indicated - 1/4 to 3/4 mile radius <br />Inferred - 3/4 to 3 mile radius <br />A Planimeter was used to calculate the areas of each area of influence. <br />The Cameo "C" seam was calculated using the same procedure and an isopach map <br />drawn from the sparse drill hole information in the "C" seam. <br />• CALCULATION OF COAL RESERVE BASE, CAMEO "B" SEAM <br />The coal reserve base was calculated as stated above using the following equation: <br />(Area in Acres) x (Avg. Thickness) x (Avg. Density = 90 lbs/ft3) x <br />1 Ton <br />(2000 lbs = Tons <br />Estimate coal reserve base for the Cameo "B" seam in the lease area: <br />Avg. Thickness <br />Area (Acres) (Feet) Tons <br />Measured 1157.77 7.46 16,930,000 <br />Indicated 1161.16 9.22 20,986,000 <br />Inferred 20.20 5.70 226,000 <br />TOTALS 2339.13 -- 38,142,000 <br />CALCULATION OF MINEABLE RESERVE BASE, CAMEO "B" SEAM <br />The �ineablc reserve base is the same as the coal reserve base, since all coal <br />0 <br />in the lease -rea is considered commercially mineable. <br />