Modern movie health and safety standards are very different from what they used to be. Now they focus on protecting the case and the crew from any harm or damage as best as they can.
However, it wasn’t ALWAYS like this. Even now, with all the safety measures, you can’t be 100% sure that nothing will happen to you on one of those sets.
In fact, there are many stories about dangerous events that occurred outside “action time”, and what we found out is…chilling. Here are some of the most dangerous movie sets that were ever staged, and what happened on them: