Laserfiche WebLink
Page 2 <br />• The location of these <br />not likely. The slop <br />life of the mine. In <br />east are projected to <br />connecting these rd~k <br />slopes is also at a location where subsidence is <br />.s should be preserved at this location for the <br />the event that the main haulage entries to the <br />the surface, [here will not be a problem in <br />slopes fot a change of haulage to the surface. <br />The longwall mine projection for developing the mine to the current <br />lease boundary and thence retreat by longwall methods is a very suitable <br />method of recovery. One consideration no[ shown on the map is a 300-foot <br />barrier pillar that should be left on each side of the fain Naul~ge <br />Entry. The company is aware of this charge. This is shown on the <br />enclosed sketch or xerox copy of this section of interest. .The reason <br />foz leaving the 300-foot barrier is to allow access to the deeper coal. <br />Should bad mining conditions occur to prevent access to the deeper coal, <br />the barrier request covld.[hen be made to mine this coal. Access to <br />the deeper coal is necessary. <br />The only difference in the approved plan of 1/16/78 is the method of <br />mining. The plan approved 1/16/79 vas for continuous miner operations <br />with short panel entries. There is one set of bleeder entries designated <br />as the Dip Section that is on the new plan. The location of Chese <br />bleeder entries will have [o be moved westward to within 300 fee[ and <br />parallel to the `fain Dip Entries. A detailed plan for recovery of panel <br />entries off 2 Dip is not shown on the plan map. All that is shown on <br />• the map is the projection of where the panel entries will be located. <br />~ A revised map should be submitted to show more detail for the panel <br />development off the 2 Dip. <br />This particular mine is a very difficult mine to gain the naxinum <br />recovery of coal because of the existing soft botton that Ss prevelent <br />throughout the mine. One other characteristic within this mine is Chat <br />when mining proceeds beyond the 1500-foot of overburden, mining becomes <br />most difficult any: dangerous. Projections off the ~1ain Slope toward the <br />west for panel development for the years 1980-81 will extend beyond the <br />2000-foot cover line which will make the mining more difficult. It is <br />believed that this particular mining operation of longwall development <br />system will allow for the maximum coal recovery. <br />It is suggested that you contact Western Slope Carbon, Inc., and request <br />an updated mine m:ip to show mete details of recovery of coal within the <br />panel entries off 2 Dip and also to shoe t1~e 30)-foot barrier parallel <br />to the ALZin Slops. <br />Mining by longwal; methods will alloy for uniforn subsidence with resulting <br />minor surface impact. _.~~ <br />• <br />c, ,- <br />~ ,~ :y\ <br />! ~'r. F~ <br />1 <br />~ <br />., ` ` S <br />' t <br />' <br />~J? ~ <br /> <br />. / <br />~ <br />..~:~ i <br /> <br />