Ad for radioactive soil to increase crop-yields, 1948 - Boing Boing - http://www.boingboing.net/2011...
"The August, 1948 issue of Sunset magazine advertised "a truly radioactive soil" for your crops, which would remain in your soil for 20 years ("quite harmless") and increase yields by 20 percent." - Brian Sullivan
In retrospect I guess this product was not a good idea? - Brian Sullivan