Ben, You might try some articles from SEMA. Enivironmental Engineering books and magazines, and here's one I found on the net that has some references. http://www.epa.gov/ORD/NRMRL/Pubs/625R02001/625R02001chap2.pdf I've seen some articles in Mopar Collectors Guide on the subject but I would tend to question how accurate it might be. It could be a reference though. Gary > > Its: "The government role in our hobby" basically. > and I need sources such as periodicles, books, or > magazines. These are the ones I'm having the most > trouble with. > > \ > Ben, > > What is your project again? Also, what type of > material are you in need? > Be glad to assist! > > Buck > > >