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<br />.' <br /> <br />00 <br />:-.1 <br />C\I <br /> <br />v:>, <br />~;{~) <br />," <br /> <br />1,325,000 tons produced at the Nucla Strip Mine through 1975, <br /> <br />and a 50 percent recoverability factor for the 440,000 tons <br /> <br />produced by all other mines in the area, the reserves depleted <br /> <br />by production total 2,350,000 tons through 1975. Production <br /> <br />depletion reduces the original reserve estimate to 112 million <br /> <br />tons for the Nucla-Naturita coalfield. <br /> <br />Based on the 50 percent recoverability factor for Colorado <br /> <br />coals, recoverable reserves for the Nucla-Naturita reserve area <br /> <br />are 56 million tons. <br /> <br />The Norwood field is not me~tioned by the U.S.G.S. where <br /> <br />coal reserve estimates were made for various Colorado coalfields. <br /> <br />- 2 - <br />