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TABLE 3-8 <br />EXTENT OF UNDERGROUND MINE WORKINGS <br />• <br />YEAR <br />ROADSIDE SOUTH <br />ROADSIDE NORTH <br />CUMULATIVE <br />ACRES <br />ACRES <br />ACRES AFFECTED <br />1974-1980 <br />253 <br />63 <br />316 <br />1981-1986 <br />1,312 <br />95 <br />1,723 <br />1987-1992 <br />164 <br />0 <br />1,887 <br />1993-1997 <br />700` <br />350` <br />2,112 <br />Projected in November 1994 - assuming increasing production to 2.4 million raw tons per <br />year by 1997.. <br />• <br />0 <br />