Oh, there's a tiny picture of it blowing up if I remember right. Also, there's something about it in almost every safety orientation for new guys. I don't think such an accident has happened in years. Another cool safety feature is that the acetylene has reversed twist on the hose threads so even a color blind person can't mix them up. CO2 can be dangerous if allowed to flow freely in a confined space so we always do a "drop test" when setting up a welding system for wire feed welding. You hook it all up then set your pressure regulator and then shut the valve back off. If there are no leaks the pressure regulator dial reading will not move. If there are leaks the dial readings will drop. On quick connect hoses you set it up so the quick connect is on the pressure side while the open end that fits into it is on the side that's not hooked up. So our German supervisor is demonstrating a pressure drop to newbies. I noticed he had set up the system backwards so that when a hose is disconnected the pressure continues flowing. I pointed this out to him and he was pissed off. Good guy reaction would have been to slap his forehead, apologize and point out his error and why it's important to set up with connections the opposite way. Nope, he fired me the next day. Same guy was helping a coworker put his lines down into a confined space feeding the lines through an access hatch down to my coworker. My coworker almost passed out every time he went down into the tank. No hole watch or safety watch stationed at access hatch. That's a severe OSHA violation. Then, he also didn't do a drop test. My coworker went up and inspected the CO2 hose and discovered it had a large burned hole in the hose. This mishap is called a near miss and requires a report be filed. Supervisor covered it up and coworker told me about it and how he almost died. This is why supervisor was demonstrating the drop test and he still got it wrong. So I'm fired, right? Nothing I can do about that but I went over to administration office for the shipyard and reported everything in detail to the safety officer. The foreman literally tried to physically block me from making the report. They knew damn well why I was over in administration. Huge fat foreman stood in front of me and repeatedly tried to block me till I started yelling and someone came out and gave him a hard look and waved me in.