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<br />TABLE 21 <br />HISTORICAL PRODUCTION RATES <br />ENERGY MINE N0. 3 <br />U <br />Year Tons Produced <br />1975 527,083 <br />1976 518,881 <br />1977 385,520 <br />1978 334,745 <br />1979 450,368 <br />1980 270,312 <br />TOTAL <br />2,486,909 <br />• <br />