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<br />• <br />• <br />Table 5 <br />Comparison of Areal Extent of <br />Mining Projections: 1980 and 1994 <br />Areal Parameter 1980 1994 <br />Existing <br />Perimeter 8700 fr 35000 fr <br />Area of Mine 3.4 x 106 ft2 3.99 x 10' ft2 <br />Exposed Roof 2.2 x 106 ftZ 2.8 x 10' ft2 <br /> (65% extraction) (1.6 x 10' @ 60% and <br /> 2.4x10'@75%) ~ <br />Permit Term <br />Perimeter NA 4.8 x 10° ft <br />Area of Mine NA 8.45 x 10' ft'- <br />i Exposed Roof NA 6.1 x 10' ft= <br /> (1.6 x 10' @ 60% and <br />~ 6.9x10'@75%) i <br />Life-of-Mine <br />i Perimeter 4.6 x 10° ft 5.2 x 10° ft <br />Area of Mine 1.7 x I08 fr2 1.21 x 108 ft' <br />~ Exposed Roof 1.1 x 108 ftZ 8.9 x 10' ftz <br /> (l.bx 10'60%and <br /> 1 x 108 @ 75%) <br />I8 <br />