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<br />~ <br />~ <br />00 <br />0} <br /> <br />. <br /> <br />- <br /> <br />Colorado has 1,380 square miles underlain by continuous oil shale sec- , <br /> <br />tions 15 to 2,000 feet thick, averaging at least 15 gallons per ton (gpt). <br /> <br />These sections averaging 25 gpt contain 400 billion barrels of oil equiva- <br /> <br />lent. Utah has sections 15 to 150 feet thick, with those averaging 25 gpt <br /> <br />holding a total of 120 billion barrels of oil equivalent. In Wyoming, <br /> <br />sections 15 to 80 feet thick contain 12 billion barrels of oil equivalent <br /> <br />in total. <br /> <br />The coals of the Region constitute a major portion of total western <br /> <br />coal reserves, with discoveries every year adding to the mining potential <br /> <br />of the Region. These generally good quality bituminous and subbituminous <br /> <br />coals and an anthracite deposit in Gunnison County, Colorado, have several <br /> <br />desirable characteristics including generally low sulfur and ash contents, <br /> <br />and medium- to high-Btu values. <br /> <br />The dark areas on Figure 4 show coal beds of commercial values <br /> <br />with a minimum of 14 inches thickness for bituminous and anthracite <br /> <br />coals and 30 inches for subbituminous and lignite. Lighter areas show <br /> <br />coal beds less than the above minimums, deeply buried in structural <br /> <br />basins, or covered by noncoal-bearing rock. Not shown are recent dis- <br /> <br />coveries of additional commercial value coals in San Juan County, Utah. <br /> <br />Although Arizona does have a major coal-bearing region in its Black <br /> <br />Hesa Field outside of the Upper Basin area, it is the only Upper Basin <br /> <br />State that has no known coal deposits of significance within the Upper <br /> <br />Basin. <br /> <br />2-] <br />