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<br />i <br />- REGRADED TOPOGRAPHY - <br />- ORIGINAL TOPOGRAPHY - <br />TOTAL BANK OVERBURDEN <br />AND PARTINGS <br />-TOP OF COAL - <br />TOTAL COAL THICKNESS <br />- PIT FLOOR - <br />Ls <br />AREASWeII = (DEPTHsweli)(LENGTFfsection) <br />AREAbank = ( DEPTH bank 1( LENGTH section) <br />PERCENT SWELL FACTOR = <br />ILLUSTRATIVE <br />~(As / Ab) -I~ 100 <br />CROSS SECTION <br />T <br />ds <br />..~- <br />