TR  / IC-9247 <br/>
Charistopher Mark <br/>
       Pillar design methods for longwall mining 
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<br><U>Copy Details:</u><br> Acc. No.: <b>TR6457</b>, Full Call No.: TR IC-9247,   Item type:  Technical Report , Location: General Stacks, <br><b>------------------------- --------------------- ------ --------- ------- ------- --------- -------- </b><br>