I've seen some things on mining construction sites that'd curl your toes, too. Once I was troubleshooting a cabinet and the light changed. I looked up and there was an EWP with two guys pulling cables, about 10m directly above me. No warning, no marked drop zone, no communication. On the same site I saw a 20 ton piece of equipment get lifted into position, double lift between a gantry crane and a Franna, again no drop zone or anything, just one guy coordinating with hand signals. It worked out OK, but yikes.