May 5th marks the 33rd anniversary of the Shell Norco Plant blast in Diamond, Louisiana. The blast claimed the lives of seven employees and released over 150 million pounds of pollution into the air. Click here to watch NASP’s Today In History to learn how corroded vapor lines sparked the deadly explosion. Don’t forget to like and subscribe to NASP’s YouTube channel to stay up-to-date with weekly news alerts, HS&E tips and tricks, and more!