Dylan Spaulding

@dkspaulding.bsky.social

Senior Scientist, Union of Concerned Scientists, Global Security Program. Views are my own. Blog: blog.ucsusa.org/author/dylan-spaulding/

This is spot on. NNSA is impeding the DNFSB from carrying out out critical safety oversight while speeding up hazardous processes like Pu pit production. A fire last month in a glovebox at LANL maybe one of the last we hear about until/unless a much worse accident occurs.

🇵🇸Martin “Doomsday” Pfeiffer🖖🏳️‍🌈@nuclearanthro.bsky.social · 5d ago

🚨Important🚨 Trump Regime making "widespread revisions to nuclear safety capabilities" whilst (illegally) undermining nuclear weapons safety oversight Enable my work patreon.com/nuclearanthro paypal.me/nuclearanthro Have not seen reported by MSM. #PhDLife Free post accessible 2 all #NukeSky 1/e

One of the most active regions in the Gironde fires is approaching one of France's nuclear research sites, CEA CESTA, which houses the French megajoule laser. In addition to a heavy aerospace/defense industry presence around Bordeaux, another instance of defense meeting climate change head on.

Map from Effis/Copernicus showing active fire density in the Gironde fire on the outskirts of Bordeaux, France, as of 28th of July, 2026.

the crew jettisoned two of the bombs roughly 75 and 50 miles off the coast (they planned to jettison all three but ran out of time). Despite an extensive and secret three-month search, neither atomic bomb was ever located or recovered. The Air Force did not publicly disclose their loss until 1977.

A color photograph of a Mark-5 atomic bomb on display in an Air Force museum near a strategic bomber. The bomb, which has a flat nose and four tail fins, is painted army green and sits on a wheeled, shock-absorbing transporter (also green).The official Department of Defense summary of this accident:

"Two weapons were jettisoned from a C-124 aircraft on July 28 off the east coast of the United States. There were three weapons and one nuclear capsule aboard the aircraft at the time. Nuclear components were not installed in the weapons. The C-124 aircraft was enroute from Dover AFB, Delaware when a loss of power from number one and two engines was experienced. Maximum power was applied to the remaining engines; however, level flight could not be maintained. At this point, the decision was made to jettison cargo in the interest of safety of the aircraft and crew. The first weapon was jettisoned at 4,500 feet altitude. The second weapon was jettisoned at approximately 2,500 feet altitude. No detonation occurred from either weapon. Both weapons are presumed to have been damaged from impact with the ocean surface. Both weapons are presume [sic] to have submerged almost instantly. The ocean varies in depth in the area of the jettisonings. The C-124 landed at an airfield in the vicinity of Atlantic City, New Jersey, with the remaining weapon and the nuclear capsule aboard. A search for the weapons or debris had negative results."A color photograph of a gray metal “birdcage” on display in a glass case at the National Museum of Nuclear Science & History in Albuquerque, New Mexico. A birdcage was used to store and transport a single plutonium capsule or core for early atomic bombs (before sealed pit designs were perfected and widely deployed). The spherical capsule was kept in the pressurized and neutron-absorbing cylindrical reservoir in the center. The welded tubing surrounding the reservoir kept capsules far enough apart from each other to prevent a criticality accident (an accidental, short-lived chain reaction that, while not a full nuclear explosion, could release enough radiation to kill or seriously injure anyone nearby).

Los Alamos: "The most recent amended complaint—more than 280 pages filed last month—alleges a culture of corner-cutting, retaliation and blurred financial lines between the firm created for the federal cleanup contract and its parent companies" www.santafenewmexican.com/news/local_n...

LANL nuke waste cleanup contractor's ex-employees allege safety lapses, retaliation

As of June, 15 former employees of Los Alamos National Laboratory cleanup contractor N3B had joined the federal lawsuit

santafenewmexican.com

"This is not energy strategy. Ninety percent of the San Juan Basin is already leased. Chaco is not what stands between this country and its energy needs. It is what connects this generation of people to our ancestors." - Acoma Pueblo Gov. Charles Riley Everyone should comment.

santafenewmexican.com

"In a press statement released on July 15, the Union of Concerned Scientists (UCS) announced that the NNSA redacted the summary of its congressionally mandated study on the aging of plutonium, in response to a Freedom of Information Act request" www.gpb.org/news/2026/07...

Nuclear watchdogs seek answers on plutonium pit need before comment deadline

Groups say the NNSA withheld key plutonium pit aging study as public comments on its environmental review close midnight on July 16.

gpb.org

Today is the deadline to submit comments on the Programmatic Environmental Impact Statement for plutonium pit production. See pitpeis.com for toolkits and info on how. It’s important, especially as the NNSA withholds key information that could inform the scope of the program.

Nuclear watchdogs seek answers on plutonium pit need before comment deadline

Groups say the NNSA withheld key plutonium pit aging study as public comments on its environmental review close midnight on July 16.

gpb.org

In response to a Freedom of Information Act request submitted by the Union of Concerned Scientists, the NNSA chose to fully redact an unclassified summary of a recent, congressionally mandated, study on the aging of plutonium in the United States’ nuclear arsenal.

NNSA Fully Redacts Vital Documents on Nuclear Weapon Cores

The NNSA fully redacted a study on plutonium aging in the U.S. nuclear arsenal, in response to a FOIA request from UCS

ucs.org

A new study shows that the NNSA may severely underestimate the risk from plutonium fires at Los Alamos and Savannah River. Geographic limits are much larger and latent cancer fatalities may be 10-100 times worse than NNSA assumes. 🧵

Consequence Analysis of Major Fires at Plutonium Pit Production Facilities

As the United States reestablishes large-scale plutonium pit production, federal agencies have published environmental impact studies estimating radiological consequences from major facility fires ...

tandfonline.com

July 8th marks the anniversary of the Russell-Einstein manifesto - a document that only seems to become more important with time. I wrote this piece last year to recognize its ongoing relevance. If you've never heard of it, please check it out:

The Russell-Einstein Manifesto: A Call to Avoid Nuclear War Resonates 70 Years Later

Sadly, a 1955 call to renounce war or risk annihilation signed by Albert Einstein and philosopher Bertrand Russell remains just as relevant today.

blog.ucs.org

@ucs.org has published an interactive tracker, documenting Trump's attacks on science and research. This onslaught may end up being one of the most damaging legacies of this admin., with impacts that are not yet appreciated by all, but that will reverberate far down the road.

New UCS Tool Tracks Trump Administration's Attacks on Science

The Union of Concerned Scientists (UCS) today launched the Attacks on Science Tracker, a new interactive platform documenting attacks on federally funded or conducted science, scientific integrity and...

ucs.org

Los Alamos continues to trim away administrative controls to speed up plutonium work, now to include the frequency of Pu inventories. For a facility that saw an exodus of criticality safety workers a decade ago due to violations, this is troubling. Admin controls are an important part of safety.

Davis highlights productivity gains at PF-4 through reduced administrative burdens - ExchangeMonitor

Efforts to reduce administrative burdens and streamline operations at Los Alamos National Laboratory's PF-4 plutonium facility have increased the amount

exchangemonitor.com

In a story for Source NM, northern New Mexico journalist Alicia Inez Guzmán, recently a NYT fellow reporting on the $1.7-trillion-effort to modernize America’s nuclear arsenal, delves into the fed's decision to stop paying to test Los Alamos National Laboratory's Rio Grande runoff.

Testing the waters: Feds stop paying to sample LANL runoff • Source New Mexico

The Buckman Direct Diversion is now paying to test drinking water from the Rio Grande after the feds stopped picking up the tab

buff.ly

"Ignorance is a wasting disease, a death of a thousand cuts. A gradual 'falling behind' the rest of the world, not only in the ability to advance basic science, but also in the ability to educate, innovate, and retain the best and the brightest minds." —Ben Santer, always with the bangers

The wasting disease threatening US science and ‘Patient Earth’

Ignorance is a wasting disease, a death of a thousand cuts. A gradual “falling behind” the rest of the world, not only in the ability to advance basic science, but also in the ability to educate, inno...

thebulletin.org

A final public hearing on the environmental impacts from plutonium pit production will occur in Washington DC, Weds, May 20th, 2pm, Southwest Library, Large Meeting Room 900 Wesley Pl, SW, Washington, DC 20024

Public rips NNSA pit plan as ‘retroactive rubber stamp’ - ExchangeMonitor

SANTA FE, N.M. — Residents, advocates and technical experts said here last week that a National Nuclear Security Administration (NNSA) environmental

exchangemonitor.com