South Korean Kim Yong-ho thought he would die within seconds after a 200kg (441lbs) industrial press at a Hyundai Steel plant sprang to life during maintenance and crushed his legs and back.It was 2019, and Kim said he thought the heavy machinery around him had been switched off as he made repairs.“I was flattened like a squashed frog in a roadkill,” he said. “I couldn’t breathe for a few seconds.”A quick-thinking colleague saved his life by alerting the machine’s operator, said Kim, now...