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<br />formation, although some geologists believe that they are the <br />same seam by correlating the area through which the river has <br />cut. While Mt. Gunnison does not currently have a wash plant to <br />analyze the physical and chemical nature of washed refuse, Hawk's <br />Nest does, and with the formation being similar, analysis of <br />their wash plant refuse may be appropriate. In fact, Mt. Gunnison <br />coal has been washed at the Hawk's Nest prep plant with the <br />refuse being disposed of in the Lower Waste Coal Disposal Area. <br />The physical and chemical characteristics of the refuse <br />material derived from the mine wash plant have been determined.. <br />By size, as determined by round-hole screens, 10.998 was less <br />than 3 inches; 26.698 was less than 1 to 3 inches; 35.748 was <br />less than 1/4 to 1 inches, and 24.018 was less than 1/4 inch. <br />Proximate analysis of the material indicated composite percent <br />moisture of 4.088, percent ash 62.888, percent volatiles 16.758, <br />percent fixed carbon 16.728, and percent sulfur 0.718. This <br />refuse has a composite BTU/lb of 4238. <br />Two types of leachate were performed on the coarse mine <br />refuse material. in the first analysis, samples of refuse were <br />pulverized and soaked in distilled water with a pH of approximat- <br />ely 7 for one week. This water and refuse material was stirred <br />three times in the first three days and then allowed to settle. <br />The water was decanted, filtered through a 0.45 um filter and <br />analyzed. Results of this analysis are presented in Table 6. <br />3-9 <br />