Check out the carhart "FR" clothing line. I have been using it for a couple of years and i am very happy with It. Using cat 2 shirts and jeans with a cat 4 coat and balaclava. I also use elvex face shield w/hardhat. very comfortable.
I know that it seems daunting all the regulations in the 70e, but comming home alive is always a good thing. Remember that the standards are there because of past stupidity.
Most of the time the clothing I mentioned will cover the letter of the code, and moon suit not always needed.
