In 1956, the US government exploded a nuclear bomb near bottles of beer to see if beer would still be safe to drink in the event of the nuclear apocalypse. Conclusion: at least you can still safely get drunk in a nuclear wasteland.
In 1953, an Australian Centurion main battle tank survived a nuclear test that was only 500 yards away. Later nicknamed the Atomic Tank, it went on to serve in the Australian military for 23 more years, including 15 months of service in Vietnam. At least 12 of the 16 crewmen of the tank died of cancer, according to a former crewmember in an interview in the 1990s.
In 1945, Kodak accidentally discovered the US were secretly testing nuclear bombs because the fallout made their films look fogged.
During the 1950s, the U.S. military tested nuclear weapons so close to Las Vegas, that you could clearly see the mushroom clouds from downtown Hotels. This became a temporary tourist attraction.
Starfish Prime was a 60’s US military experiment designed to see what would happen when a nuke was detonated 250 miles above Earth’s magnetic pole. It resulted in an EMP 900 miles wide, an intense artificial aurora, and a radiation belt that disabled 1/3 of the low orbit satellites and lasted 5 years.