Nuclear bomb nearly exploded over US

DAN LAMOTHE
Last updated 11:16 11/06/2014
B-52
Reuters

THE B-52 BOMBER: Three US Air Force personnel died after a B-52 broke up over North Carolina on January 24, 1961. One of two nuclear bombs dropped from the aircraft and landed in a backyard.

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There are few things in this world that can change the course of history faster than a nuclear bomb exploding. The devastation is immediate and lasts for years.

That makes the latest details to emerge about a January 24, 1961, incident involving two nuclear bombs all the more jarring.

A B-52 bomber broke up in the sky over North Carolina, and one of the two bombs on board was in the "armed" setting by the time it hit the ground near Goldsboro, North Carolina, according to a newly declassified report published on Monday (local time) by the National Security Archive. If the switch had not been damaged by the impact of the crash, the weapon could have detonated, the report said.

A South Carolina doctor ended up treating a family who were injured as an explosion tore through their back yard. After spending a night in the doctor's house to have their wounds treated, the family returned home to find an atomic bomb from the plane sitting at the bottom of a 15-metre crater behind their house.

The so-called "Goldsboro incident" received widespread attention in September last year, when details about the incident were published in a new book, Command and Control, by Eric Schlosser. And it sounds just as ominous as described on Monday by Bill Burr of the National Security Archives.

"The report implied that because Weapon 2 landed in a free-fall, without the parachute operating, the timer did not initiate the bomb's high voltage battery ("trajectory arming"), a step in the arming sequence," Burr wrote. "For Weapon 2, the Arm/Safe switch was in the "safe" position, yet it was virtually armed because the impact shock had rotated the indicator drum to the "armed" position. But the shock also damaged the switch contacts, which had to be intact for the weapon to detonate."

Burr concluded:

"Perhaps this is what Secretary of Defense Robert McNamara had in mind, a few years later, when he observed that, 'by the slightest margin of chance, literally the failure of two wires to cross, a nuclear explosion was averted'."

Three US Air Force personnel in the B-52 died after the plane broke up that day. They were Sergeant Francis Roger Barnish, Major Eugene Holcombe Richards, and Major Eugene Shelton.

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