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Correlation of these seams is difficult due to the sporadic occurrence of numerous thin coal lenses in <br />the interval containing F and G. <br />33.5 H~tam The sequence of rocks overlying the G Seam is chazacterized by numerous thin, <br />discontinuous lenses of coal and carbonaceous shale interbedded with siltstone and thin, occasionally <br />' calcareous sandstones. The interval ranges from about 15 to 50 feet in thickness. The top of this zone <br />is marked by the H Seam. However, the minable thickness of coal occurs in isolated pockets not <br />amenable to subsurface mining. <br />,' 33.6 J_$pam Above the H Seam, the stratigraphy is typified by an increasing abundance of coarser <br />' grained non-coal beazing sediments. Thick sandstones aze prevalent with only occasional occurrences <br />of thin coal lenses. The J coal seam is particulazly conspicuous as a thin but continuous seam <br />sandwiched between thick sandstone units. ]t essentially mazks the contact between the Upper and <br />' Lower Williams Fork Formations. The J Seam has no mining potential. Isolated occuaences of <br />minable coal thickness of limited areal extent aze found in the Deserado Mine area. <br />' 3.4 Other Minerals <br />Oil and gas exploration (seismic surveys) has been conducted in the Deserado Mine area. The results <br />of these surveys or the potential for recoverable oil and gas reserves in the Deserado Mine azea are <br />unknown. In addition, uranium prospectors have staked claims in the general azea; however, the value <br />or potential of the uranium prospects is unknown. Western Fuels is unaware of any other potential <br />economical mineral deposits in the mine azea. <br /> <br /> <br /> <br /> <br /> <br /> <br />14 <br />1 <br />