Dear sir Ht line not belonging to owner poses risk again it depends on method. In case of stowing the stability is good. During depillaring resort to partial extraction method like wide stall. You have to consider angle of draw on either side to offset the effect of subsidence D Nanda kumar Sr manager(mining) Sent from Yahoo Mail on Android
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Posted by: NANDAKUMAR das <nandu_das2@yahoo.com>
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