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1.0 ZNTRODIICTIOH <br />• <br />New Castle Mines proposes to place underground development rock 1 <br />waste at the portals of the twin access tunnels at their Coal Ridge f <br />#1 Mine in Garfield County, Colorado, in order to expand the <br />current pads, to provide turning and working area at the tunnel <br />portals, and in order to dispose of the material excavated. This <br />report evaluates the stability of the proposed portal pads, usinc <br />the format of the Colorado Mined Land Reclamation Division's <br />"Regulations of the Colorado Mined Land Reclamation Boar2 for Coal <br />Mining", dated August 30, 1980 (latest revision 1/17/90}. <br />• - ~~ ~ <br />-' Adrian Ero¢rs Coasultrsts -1- <br />:115/900._1 <br />