Old story... very long article but well worth reading... it's mindblowing...

USS Calhoun County sailors dumped thousands of tons of radioactive waste into ocean

They asked the dying Pasco County man about his Navy service a half-century before. He kept talking about the steel barrels. They haunted him, sea monsters plaguing an old sailor.

"We turned off all the lights," George Albernaz testified at a 2005 Department of Veterans Affairs hearing, "and … pretend that we were broken down and … we would take these barrels and having only steel-toed shoes … no protection gear, and proceed to roll these barrels into the ocean, 300 barrels at a trip."

Not all of them sank. A few pushed back against the frothing ocean, bobbing in the waves like a drowning man. Then shots would ring out from a sailor with a rifle at the fantail. And the sea would claim the bullet-riddled drum.

It wasn't long before Albernaz began keeping a different kind of diary. He titled this new log "Nuclear Waste Dumping Diary."

Jan. 20 1957: "371 tons atomic waste."

Feb. 7, 1957: "368 tons atom waste."

Nov. 13, 1957: "299 (tons) poison gas (and) A.W."

One of Albernaz's last entries was on June 12, 1958: "200 tons. Spec. weapons," or special weapons. That was the day, Albernaz later told his wife, that he helped dispose of an atomic bomb.

The Calhoun County sailed out of Norfolk, Va. with two giant crates. The ship's log noted it dumped "confidential material" at 2:31 a.m.

Albernaz's wife said he told her about that trip. He said the crew was told the crates contained two atomic bombs. Other sailors interviewed said the occasional dumping of disassembled atomic bombs occurred several times in its history.
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