The T-249 switch used to arm nuclear bombs on Strategic Air Command bomber aircraft. Photo courtesy of Glenn's Computer Museum.
A recently declassified Sandia National Lab report published by the National Security Archive offers new details about a 1961 nuclear weapons accident in Goldsboro, North Carolina.
While both multi-megaton Mk 39 bombs involved in the mishap were in the "safe" position, the report concluded, by the time one of them hit the ground it was in the "armed" setting because of the impact of the crash. If the shock had not also damaged the switch contacts, the weapon could have detonated.
Since the advent of the nuclear age, the nightmarish possibility of an accidental detonation has made weapons safety a boiler-plate item in the U.S. nuclear weapons program — yet potentially serious errors continue to occur. A series of 2013 reports on the Goldsboro accident provided a fresh reminder of the role of luck in preventing nuclear disaster: the same switch involved in the 1961 event had failed in other incidents.
More at the National Security Archives website.
One of the two Mk39 thermonuclear weapons that landed when a B-52 bomber broke up over Goldsboro, North Carolina in February 1961. This was the weapon that came closest to detonation.
University of Zurich researchers used transcranial magnetic stimulation, a noninvasive method of inhibiting activity in parts of the brain, to “turn off” people’s ability to control their impulses. They focused on the temporoparietal junction, an area of the brain thought to play an important role in moral decisions, empathy, and other social interactions. They hope […]
Are you jonesing for a dose of optimism and possibility? In the mood to contemplate the cosmos? Want to experience a musical message for extraterrestrials the way it was meant to be played? The Voyager Golden Record: 40th Anniversary Edition, a project I launched with Timothy Daly and Lawrence Azerrad, is a lavish vinyl box […]
In Rich do not rise early: spatio-temporal patterns in the mobility networks of different socio-economic classes, a group of transportation engineers analyze an open data-set about the commutes of people in the Colombian cities of Medellín and Manizales, concluding that the rich and the poor commute the furthest distances, but that the rich have much […]
This Python Mega Course will help you learn to code by teaching you to build 10 real-world apps that each highlight a unique use of Python.Job prospects for coders are still growing steadily—and with Python being one of the most popular coding languages out there today, it’s important for job seekers to demonstrate a widespread understanding of the […]
The Atmos R2 may be bigger than the brand’s previously-released vapes, but we argue that in this case it’s definitely a good thing. A bigger heating chamber means more room for packing it full. And the bigger battery means longer, more fulfilling vape sessions. In fact, you can use the Atmos R2 for up to about 25 […]
These days, there is huge demand for ethical hackers. Companies pay these professionals to identify and remedy security holes in their networks before malicious hackers find and exploit them. What’s great about this is that if you love hacking or think you may love hacking, you can do it for a living and not as […]