Mine Foreman was making fireboss run. At apptox 6""22 am, discovered a roof fall in #3 entry. BRK 41, 1 bk. inby spad 214. Fall measures 20'lx18'wx4'thick. Type of roof bolts used in this area was #5x48"". No, person or equipment involved. The wall will be timbered and dangered off.