A man less than three weeks on the job according to you is supposed to foresee a rope getting caught in the chopper, looping around him, and yanking him into the chopper teeth? Did the manufacturer see this fault? Did the contractor see this fault? Obviously, no one saw this fault, or considered it a possible fatal flaw. It's not as obvious a fatal flaw as working on a roof without fall arrest equipment. It's not even so obvious a situation as working over a drill press or lathe with long unbound hair or metal necklace, two situations usually forbidden in work environments.