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t <br />11~05i93 15:18 <br />BASIN RESOURCES <br /> <br />III IIIIIIIIIIIIIIII ~0~ <br />sss <br />14300 Highway 12 <br />Weston, Colorado 81091 <br />(719)868-2761 <br />FAX (719)868-2275 <br />BASIN <br />RESOURCES, wa <br />'7198682275 <br />• <br />a subsidiary of ENTECH, Inc. <br />November 1, 1993 <br />Mr. Daa Hernandez <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Re: Golden Eagle Mine Permit No. C-81-013 <br />New filk Mine Permit No. C-81-012 <br />Maxwell Seam Coal <br />Spontaneous Combustions <br />Dear Mr. Hernandez: <br />...•~ <br />This letter is in response to the concerns of the Office of <br />Mined Land Reclamation regarding the susceptibility of <br />Maxwell seam coal to spontaneous combustion. <br />This is a problem commonly encountered with low rank coals <br />with a higher moisture content. This has been especially <br />true of sub-bituminous and lignitic western coals. <br />The Maxwell coal is a higher rank, low moisture coal. <br />Typically, it would not be expected to experience problems <br />with spontaneous combustion even when stockpiled for <br />extended periods. This has been demonstrated by past <br />experience. There have been periods where stockpiles have <br />remained intact for from 12 to 18 months with no problems <br />with spontaneous combustion. <br />Proper stockpiling procedures will also reduce the risk of <br />spontaneous combustion. Coal should be place in shallow, <br />well compacted lifts. Sealing the surface of coal piles <br />expected to remain in place for extended periods will <br />minimize the risk of spontaneous combustion. <br />The Maxwell coal from the Golden Eagle mine is trucked to <br />the New Elk preparation plant. The coal is typically placed <br />in longer term stockpiles in shallow, well- compacted lifts. <br />