A roof fall had occurred at 58 1/4 xc in 3 west in #4 entry. The fall measured approx. 10' in length, 17' wide and 5' to 6' in height. Area was bolted with 8' install III resin assisted bolts with screen, straps and 12' CC cable bolts installed in every other row on pattern. The return/alternate escapeway where re-routed and re-opened. Caused was deterioration of the mine roof.