Although public concern about fallout from nuclear testing grew in the early 1950s , fallout was discovered after the Trinity test in 1945 . Photographic film manufacturers would later report ' fogged ' films ; this was traced to packaging materials sourced from Indiana crops , contaminated by the '' Trinity '' and later tests at the Nevada Test Site , over 1,000 miles away . Intense fallout from the 1953 '' Simon '' test was documented as far as Albany , New York
Simon
Upshot-Knothole Simon
Underground nuclear weapons testing