The bomb that nearly exploded over North Carolina was 260 times more powerful than the device which devastated Hiroshima in 1945. Photo: Three Lions/Getty Images
A secret document, published in declassified form for the first time by the Guardian today, reveals that the US Air Force came dramatically close to detonating an atom bomb over North Carolina that would have been 260 times more powerful than the device that devastated Hiroshima.
This document was written on 22 October 1969 by Parker F Jones, the supervisor of the nuclear weapons safety department at Sandia national laboratories. The document has recently been declassified having been acquired under freedom of information provisions by the investigative reporter Eric Schlosser for his new book Command and Control. It is published here for the first time.
The document, obtained by the investigative journalist Eric Schlosser under the Freedom of Information Act, gives the first conclusive evidence that the US was narrowly spared a disaster of monumental proportions when two Mark 39 hydrogen bombs were accidentally dropped over Goldsboro, North Carolina on 23 January 1961. The bombs fell to earth after a B-52 bomber broke up in mid-air, and one of the devices behaved precisely as a nuclear weapon was designed to behave in warfare: its parachute opened, its trigger mechanisms engaged, and only one low-voltage switch prevented untold carnage.
The accident happened when a B-52 bomber got into trouble, having embarked from Seymour Johnson Air Force base in Goldsboro for a routine flight along the East Coast. As it went into a tailspin, the hydrogen bombs it was carrying became separated. One fell into a field near Faro, North Carolina, its parachute draped in the branches of a tree; the other plummeted into a meadow off Big Daddy’s Road.
Jones found that of the four safety mechanisms in the Faro bomb, designed to prevent unintended detonation, three failed to operate properly. When the bomb hit the ground, a firing signal was sent to the nuclear core of the device, and it was only that final, highly vulnerable switch that averted calamity. “The MK 39 Mod 2 bomb did not possess adequate safety for the airborne alert role in the B-52,” Jones concludes.
The document was uncovered by Schlosser as part of his research into his new book on the nuclear arms race, Command and Control. Using freedom of information, he discovered that at least 700 “significant” accidents and incidents involving 1,250 nuclear weapons were recorded between 1950 and 1968 alone.
“The US government has consistently tried to withhold information from the American people in order to prevent questions being asked about our nuclear weapons policy,” he said. “We were told there was no possibility of these weapons accidentally detonating, yet here’s one that very nearly did.”
Read the full article on The Guardian.