I don't have the particulars in front of me, but Thalidomide has been dusted off and there have been experiments with using it to "cure" other diseases.
After W.W. II, there was a lot of fluoride laying about, so that ended up in the U.S. water system under the guise that it would help to prevent tooth decay.
Monsanto's Agent Orange has its cousins currently in use to get rid of plant pests.
MANY dangerous chemicals end up "recycled" because it's cheaper for the corporations (many of them on contract with the U.S. military) to find "uses" for them.
How many dump sites have toxic things that have never been properly measured, no less regulated?
How many toxic dump sites are YET to be cleaned up since the Super Fund allocation of funds only covers a pittance of them.
I don't trust Big Pharma, Monsanto, Big Insurance, or a great many corporate powers because their current model is not to do no harm; but rather to do harm until they get caught; and at that time, they hire the best team of lawyers to push the presumption of innocence clause. That, incidentally, is not difficult given that a climate of so much toxic exposure makes it inordinately difficult to place the ONUS on one particular offending agent.
I have made that point here many times and I often see those with credentials stating the same thing.