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