That was the job, and your life was expendable. They used to calculate how many deaths would occur on each project. On some projects, they still do btw... steel connecting hasn't really changed that much even to this day. Osha allows 25' before ironworkers have to tie off (I did hear they were thinking of changing it tho), so what they do is put the steel decking in every other floor, and a wire rope handrail around the perimeter. The use of derricks has declined with the advent of climbing cranes, but a modern jobsite really isn't that different. We often joke there's only two things that fall from the sky, bird shit and ironworkers lol. They did get rid of the ball riding and column climbing tho