Construction safety, fall protection: Photo panels right to left show worker maintaining fall protection using two lanyard/hook sets attached to his full-body harness. He climbs up to top, with one hook on the tie-off rung between his hands and the other attached near waist level. He then moves the second to alongside the first, then one to lead position, then the other to hook to ring near foot level. The catwalk section in two left panels affords some protection, but its open ends create hazard, alleviated by use of hooks/lanyards. Michigan 2006