"There are some naturally occurring radioactive chemicals here. You will find cesium, barium, radium 226 and 228. You’re going to find that in samples of grading anywhere around here. There’s natural uranium. In fact you have more issues probably with cancer occurrence in this state based on naturally occurring materials than anything documented in health studies. In the shales around here you will find naturally-occurring radium."
January 1, 1970
https://en.wikiquote.org/wiki/American_Threnody