Roof fall in on Main dtake newtal hdg-just inby 3 head aber dev 1997 and bolted with 4' 3/4"" resin bolts. Thsi area hdg has a roof fall 20-30' inby this fall which has fallen in has a60. we pooted rib prior to fall since fall has installed 10' cable bolt in this area fall approx. 20' & 17' wide cover 150'. fall is 4' high.