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r ~ <br />LJ <br />• <br />The rnair~ entries will r•ur~ parallel to ore ar~other• arrd will <br />be separated by blocks cif coal called pillars. The drift <br />entries will begin with a minimum number of portal entries, <br />them expand to a five (5) rnair~ er~1:r•y system ire or•der• t~~ <br />irnpr•ove rnir~ing arrd ventilation. The main pillars which <br />separate these er~tr•ies will be designed t~-~ pr•r_~vide si.rpp~=~r•t <br />over the life of the rnir~ir~g of 'the q Searnq they are <br />pr•o.jected at 6!~-f:~ot cer~ter•s. The width ref the rnir~e <br />-~periir~gs will be V<.ept at ~O feet thro~.rghc~~_rt rnirrirrg <br />oper•ati~~r~s. The rnairi er~tr•ies will serve as the lifeline of <br />the rniriir~g crper~atior~, pr•c~vidir~g access for• the supplies, <br />water pip.ir~g, ha~_rlaye, p~=ewer, veritilatior~ arrd support <br />ser•v i ces. <br />TgbLE :i <br />F~RQJECTED COgL FRODUCII~N <br />Year• Gr•~.d~_rcti~~r~ (T~~r~s) <br />1 61,'1Cr <br /> 61,10 <br />.: 61, ~lU <br />4 61,c10 <br />5 61,10 <br />6 61,16 <br />7 61, ~1C~ <br />8 61, clll <br />9 61, ~Sii <br />10 61,10 <br />11 61,~1C~ <br />1-otal : 673, 31~r (r•ecover•able <br />tons based on <br />68;~ r•ecc~ver•y ) <br />r., <br />L. J <br />c. p5-4 <br />