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There were much more dangerous things in old times than DDT.
Nuclear radiation was not a problem. They did not knew what it makes. That is why they put hunders of soldiers to walk in atom bomb radiation to see it.
Personal DDTOn January 27, 1951, the first atomic bomb test was conducted at the Nevada Test Site in the remote desert north of Las Vegas.
Soldier department under radiation test
This historic photo is one in a yearlong series commemorating the 100th anniversary of Clark County.