Vol. 28, No. 49 
Next subcritical experiment at PULSE slated for spring 2025, test site officials says
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Stockpile Stewardship
New underground nuke lab will cost more, not be as late as feared, officials say after review
MERCURY, Nev. — The next U.S. laboratory for testing nuclear weapons without nuclear explosions will be done a year or two sooner but cost more than forecast this spring, officials said here Wednesday. The officials spoke to the Exchange Monitor and other media outlets during a press tour of the Nevada National Security Site, organized […]
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Delivery Systems & Nuclear Triad
No Sentinel test flights on the slate yet for W87-0 Livermore officials says
LIVERMORE, Ca. — With development of the Sentinel missile largely paused, the Lawrence Livermore National Laboratory here is doing what “relevant flight testing” it can on the missile’s W87-0 warhead, a senior lab official at the Lawrence Livermore National… SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must be logged in as […]
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Life Extension Programs
W80-4 ‘on schedule,’ first production in FY2027, LLNL official says
LIVERMORE, Ca. — The W80-4 warhead’s final design reviews are complete and its first production unit is still on track for fiscal year 2027, a senior official at the Lawrence Livermore National Laboratory official told the Exchange Monitor here Tuesday. “We’re… SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must be logged […]
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Non-Proliferation
Missing radiation source found in New Jersey; state, federal agencies say they did not use drones to look for it
Federal and state agencies on Tuesday said they did not look for a radiation source, since recovered, that went missing in New Jersey earlier this month. Spokespersons for the Nuclear Regulatory Commission, the Department of Energy’s National Nuclear Security… SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must be logged in as […]
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Budget & Policy
Still no vote scheduled on spending bill after Trump, Musk, others trash latest stopgap; shutdown at midnight
A partial government shutdown loomed after President-elect Donald Trump this week told congressional Republicans to oppose a three-month continuing resolution. With about 12 hours to go until a shutdown at deadline for Nuclear Security & Deterrence Monitor,… SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must be logged in as a subscriber […]
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Budget & Policy
Senate passes 2025 NDAA, bill heads to White House
The Senate on Tuesday passed the 2024 National Defense Authorization Act, setting spending limits for nuclear weapons and waste programs and tinkering with the National Nuclear Security Administration’s authorizing law. The Senate approved the bill 85-14. Voting… SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must be logged in as a subscriber […]
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Stockpile Stewardship
For science, keep it subcritical, NNSA defense programs head says
Marvin Adams, deputy administrator for defense programs at the National Nuclear Security Administration, told the Exchange Monitor Friday that the U.S. does not need to critically test, even in a new administration. “If it’s based on purely technical considerations,… SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must be logged in as […]
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Uranium Enrichment & Fuel Cycle
Centrus says it has domestic-enrichment supply chain ready
Centrus Energy Corp. said its domestic supply chain is in place to produce uranium usable in defense programs. A spokesperson for Centrus told the Exchange Monitor in an email last week that Centrus’ manufacturing supply chain spans 13 states and 14 major suppliers,… SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must […]
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National Laboratories
NNSS prime contractor appoints new site president
Roger Rocha was appointed president of the prime contractor at Nevada National Security Site effective Monday, the site announced in a press release Monday. Rocha, the interim president since September when his predecessor resigned, now will take responsibility… SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must be logged in as a […]
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National Laboratories
Renewables lab exec picked as director of Savannah River Lab
An executive with the Department of Energy’s National Renewable Energy Laboratory in Colorado, Johney Green, will be the new head of the Savannah River National Laboratory in South Carolina, Battelle said last week. Battelle Savannah River Alliance said in a… SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must be logged in […]
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National Laboratories
Wrap up: El Capitan classified March ‘25; Russian general killed; McConnell says spend on defense; more
The El Capitan supercomputer at Lawrence Livermore National Laboratory will enter the classified network mid-March 2025, senior Livermore officials told the Exchange Monitor Tuesday at a press tour of the site. Sierra, the current Livermore supercomputer on the… SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must be logged in as a […]
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News & Analysis
Publication Notice
In observance of Christmas Day and New Year’s Day, Nuclear Security & Deterrence Monitor will not publish on Friday, Dec. 27 or Friday, Jan. 3. Look for the next issue in your inbox on Friday, Jan. 10. SUBSCRIBER ACCESS Thank you for visitingNuclear Security & Deterrence Monitor! You must be logged in as a subscriber […]