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2.03.8 Page 2H <br />MINE LIFE (ADDENDA) <br />Life of the King Coal Mine, La Plata County, Colorado is <br />estimated at approximately 377 months. Mine life is based on most <br />recent reserve estimates and projected annual production of <br />175,000 t.p.y. Date of reserve estimate is October 1, 1990. <br />Reserves, including all section pillars, but excluding main <br />entry and barrier pillars, total 5,490,957 tons. Reserve estimates <br />are based on 697 acres underlain by mineable coal in the upper <br />seam. <br />Reserves are calculated from current mine maps and seam <br />thicknesses provided by National King Coal, Inc. Main entry <br />pillars are not included in reserve estimates, as these would be <br />retained to allow possible future access to adjoining coal leases. <br />Fred M. Johnson, C.P.G. <br />___~,-.-; ,a ,._ _.. <br />,:.ate. <br />