Fordow 'deep' dive

Delldude

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Pretty damned good article on the hows and why's of the Fordow hit. Long but very excellent article explains the logistics of relocating the Iranium to another locale and what was seen by satellite. Long article but full of well informed information.

The story begins with satellite imagery. On June 19 and 20, sixteen large dump trucks were observed at Fordow. They were not empty, nor discreet. These were trucks of a kind suited to hauling construction materials, cement, earth-moving equipment, steel sheeting. Analysts who reviewed the imagery noted bulldozers actively placing cement covers over air shafts. These shafts are the known weak points in any deeply buried complex, where pressure and airflow must meet engineering limits, but where adversaries might also insert precision-guided munitions. To harden these vulnerabilities is to reinforce the very purpose of Fordow: to endure.
Crucially, none of the observed trucks were the type required to transport nuclear material. Not one matched the profile of the secure, shielded 18-wheelers required by nuclear handling protocols. Nor did they appear to be departing the facility. Most were simply repositioned about a kilometer northwest of the core site, well outside the blast radius, but still within operational range. One truck stood near the main entrance, but again, not the kind of vehicle suited to carry fissile material. There is no visual evidence of loading, no convoy, no escort vehicles, no attempt to obscure or evade. In short, there is no movement that even faintly resembles a uranium exfiltration.

To understand the impossibility of the uranium having been removed, one must first understand what moving enriched uranium entails. Iran is believed to have had approximately 900 kilograms of uranium enriched to 60 percent at Fordow. That quantity, in powder form, must be stabilized into uranium oxide and then sealed into thirty separate Type B(U) containers. Each container stands four feet tall, nearly two feet wide, and weighs between 1,100 and 1,760 pounds. These are not tossed in the back of a truck like crates of fruit. They require fixed cradles, meticulous spacing of at least three to four feet to avoid criticality risks, and strict handling by trained nuclear engineers and radiation safety officers. Criticality risk arises when excessive fissile material, like enriched uranium, is placed too closely together under certain configurations, such that it could support a self-sustaining nuclear chain reaction. Even though each container is subcritical on its own, improper spacing or environmental conditions could elevate the risk. Therefore, these containers must be spaced deliberately and isolated by materials designed to absorb or block neutrons, ensuring absolute containment and safety.
____________________
So what explains the disinformation? Likely, it is a classic tactic: inject doubt into the aftermath. Suggest that the uranium may still be intact. Foster fear, uncertainty, and doubt. The acronym is apt: FUD. And FUD is a tool of both state propaganda and media opportunism. By seeding the idea that the strike failed to eliminate the core threat, Iran preserves psychological deterrence. It invites domestic pride, foreign caution, and diplomatic ambiguity. But propaganda is not proof. Narratives are not facts. Trucks moving cement are not trucks moving uranium.
__________________
The simplest explanation is the correct one. The uranium remained in place. The reinforcements observed on June 19 and 20 were desperate attempts to patch weak points, to survive the coming assault. Fordow did not empty, it braced. And when the bunker-busters landed, they hit their mark.

1751208115446.webp



 
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On June 19 and 20, sixteen large dump trucks were observed at Fordow. They were not empty, nor discreet. These were trucks of a kind suited to hauling construction materials, cement, earth-moving equipment, steel sheeting. Analysts who reviewed the imagery noted bulldozers actively placing cement covers over air shafts. These shafts are the known weak points in any deeply buried complex
This is all old news. It did not work. The USA blew those covers to smithereens with our first bomb. Operation: Midnight Hammer was just that, a hammer--- we went well beyond what was necessary to merely render these places inoperable. Trump explained to the Iranians that deadlines mean deadlines and the Iranians missed theirs at their own expense.

but again, not the kind of vehicle suited to carry fissile material.
Exactly. If anything, Fordow was the place the Iranians were looking to move all their goodies TOO, thinking it the safest and best protected location.
 
The only guess is not if these facilities are damaged beyond rebuilding, but rather that those trying to take up for the Iranian leadership should be looked at extensively as to if they are providing material support for the Ayatollah....
 
This is all old news.
Old news or not, the how's and why's of what happened are explained for the ill informed.

What I saw of particular interest was the extreme precautions and measures of moving the Iranium.

Sat Intel
 
The only guess is not if these facilities are damaged beyond rebuilding, but rather that those trying to take up for the Iranian leadership should be looked at extensively as to if they are providing material support for the Ayatollah....
Middle shaft went all the way to the basement.....they punched several through with a 5500 pound explosive kick in each bomb.
 
What I saw of particular interest was the extreme precautions and measures of moving the Iranium.

Well sure. This is very heavy (about as heavy as lead) metal powder that is highly radioactive that is about 75% of the way to becoming fuel grade. And the higher in enrichment you become, the easier it becomes to enrich it further. That is the whole point in our hitting the place--- it wouldn't take much to make a bomb out of this stuff, and the trick is in keeping it FROM exploding.

But the bigger point most people seem to be missing in this whole nuke affair all worried whether we damaged anything or not and whether the fuel was there or not is the simple fact that between blowing up Fordow and Israel's first attack where they took out a number of top military and scientists is that, most everyone in Iran who was key in their understanding of making nuclear bombs is now dead.
 
Well sure. This is very heavy (about as heavy as lead) metal powder that is highly radioactive that is about 75% of the way to becoming fuel grade. And the higher in enrichment you become, the easier it becomes to enrich it further. That is the whole point in our hitting the place--- it wouldn't take much to make a bomb out of this stuff, and the trick is in keeping it FROM exploding.

But the bigger point most people seem to be missing in this whole nuke affair all worried whether we damaged anything or not and whether the fuel was there or not is the simple fact that between blowing up Fordow and Israel's first attack where they took out a number of top military and scientists is that, most everyone in Iran who was key in their understanding of making nuclear bombs is now dead.
I didn't miss a thing.......
 
The biggest impact of the bombing may be that the US can and will do it again if necessary.
 
Pretty damned good article on the hows and why's of the Fordow hit. Long but very excellent article explains the logistics of relocating the Iranium to another locale and what was seen by satellite. Long article but full of well informed information.

The story begins with satellite imagery. On June 19 and 20, sixteen large dump trucks were observed at Fordow. They were not empty, nor discreet. These were trucks of a kind suited to hauling construction materials, cement, earth-moving equipment, steel sheeting. Analysts who reviewed the imagery noted bulldozers actively placing cement covers over air shafts. These shafts are the known weak points in any deeply buried complex, where pressure and airflow must meet engineering limits, but where adversaries might also insert precision-guided munitions. To harden these vulnerabilities is to reinforce the very purpose of Fordow: to endure.
Crucially, none of the observed trucks were the type required to transport nuclear material. Not one matched the profile of the secure, shielded 18-wheelers required by nuclear handling protocols. Nor did they appear to be departing the facility. Most were simply repositioned about a kilometer northwest of the core site, well outside the blast radius, but still within operational range. One truck stood near the main entrance, but again, not the kind of vehicle suited to carry fissile material. There is no visual evidence of loading, no convoy, no escort vehicles, no attempt to obscure or evade. In short, there is no movement that even faintly resembles a uranium exfiltration.

To understand the impossibility of the uranium having been removed, one must first understand what moving enriched uranium entails. Iran is believed to have had approximately 900 kilograms of uranium enriched to 60 percent at Fordow. That quantity, in powder form, must be stabilized into uranium oxide and then sealed into thirty separate Type B(U) containers. Each container stands four feet tall, nearly two feet wide, and weighs between 1,100 and 1,760 pounds. These are not tossed in the back of a truck like crates of fruit. They require fixed cradles, meticulous spacing of at least three to four feet to avoid criticality risks, and strict handling by trained nuclear engineers and radiation safety officers. Criticality risk arises when excessive fissile material, like enriched uranium, is placed too closely together under certain configurations, such that it could support a self-sustaining nuclear chain reaction. Even though each container is subcritical on its own, improper spacing or environmental conditions could elevate the risk. Therefore, these containers must be spaced deliberately and isolated by materials designed to absorb or block neutrons, ensuring absolute containment and safety.
____________________
So what explains the disinformation? Likely, it is a classic tactic: inject doubt into the aftermath. Suggest that the uranium may still be intact. Foster fear, uncertainty, and doubt. The acronym is apt: FUD. And FUD is a tool of both state propaganda and media opportunism. By seeding the idea that the strike failed to eliminate the core threat, Iran preserves psychological deterrence. It invites domestic pride, foreign caution, and diplomatic ambiguity. But propaganda is not proof. Narratives are not facts. Trucks moving cement are not trucks moving uranium.
__________________
The simplest explanation is the correct one. The uranium remained in place. The reinforcements observed on June 19 and 20 were desperate attempts to patch weak points, to survive the coming assault. Fordow did not empty, it braced. And when the bunker-busters landed, they hit their mark.

View attachment 1130204





That quantity, in powder form, must be stabilized into uranium oxide and then sealed into thirty separate Type B(U) containers. Each container stands four feet tall, nearly two feet wide, and weighs between 1,100 and 1,760 pounds.

Sounds like the way we would do it.
If you're in a hurry, you could divide it into 30 of these,

1751214241994.webp


and put them into the back seats of thirty cars.

These are not tossed in the back of a truck like crates of fruit.

They could be.

They require fixed cradles, meticulous spacing of at least three to four feet to avoid criticality risks, and strict handling by trained nuclear engineers and radiation safety officers.

They really don't.
 
Well sure. This is very heavy (about as heavy as lead) metal powder that is highly radioactive that is about 75% of the way to becoming fuel grade. And the higher in enrichment you become, the easier it becomes to enrich it further. That is the whole point in our hitting the place--- it wouldn't take much to make a bomb out of this stuff, and the trick is in keeping it FROM exploding.

But the bigger point most people seem to be missing in this whole nuke affair all worried whether we damaged anything or not and whether the fuel was there or not is the simple fact that between blowing up Fordow and Israel's first attack where they took out a number of top military and scientists is that, most everyone in Iran who was key in their understanding of making nuclear bombs is now dead.

Well sure. This is very heavy (about as heavy as lead) metal powder that is highly radioactive

It's not that radioactive.
 
And start a backseat chain reaction?

Anyone handling that would be dosed and die in short order.

60 pounds of 60% U-235 oxide isn't going to go critical.


2.​


  • In a bare sphere of pure U-235 metal, the critical mass is about 52 kg
  • For 60% enriched uranium metal, the critical mass is ~48–50 kg
  • For UO₂, the effective critical mass is much higher, often >100 kg, because:
    • UO₂ is less dense (≈10.5 g/cm³ vs 19 g/cm³ for metal)
    • Neutron moderation and reflection matter a lot



⚠️ Conclusion:​


No, 60 pounds of 60% enriched UO₂ is not enough to go critical on its own.


Why not?


  • It only contains ~14.4 kg of U-235 — far below critical mass.
  • Being in oxide form further reduces neutron economy.
  • Criticality depends on geometry and the presence of reflectors or moderators — with no special configuration or neutron reflector, this is far subcritical.
 
15th post
60 pounds of 60% U-235 oxide isn't going to go critical.


2.​


  • In a bare sphere of pure U-235 metal, the critical mass is about 52 kg
  • For 60% enriched uranium metal, the critical mass is ~48–50 kg
  • For UO₂, the effective critical mass is much higher, often >100 kg, because:
    • UO₂ is less dense (≈10.5 g/cm³ vs 19 g/cm³ for metal)
    • Neutron moderation and reflection matter a lot



⚠️ Conclusion:​


No, 60 pounds of 60% enriched UO₂ is not enough to go critical on its own.


Why not?


  • It only contains ~14.4 kg of U-235 — far below critical mass.
  • Being in oxide form further reduces neutron economy.
  • Criticality depends on geometry and the presence of reflectors or moderators — with no special configuration or neutron reflector, this is far subcritical.
All this is true. However, suppose they didn't use containers that were specifically engineered to contain this kind of material. In that case, all anyone has to do is get close enough to the point of attack and start taking readings with portable detectors. If any of it was moved by any means other than known and proven containers, there will be significant traces of contamination along the route taken.

Unless it has become classified to protect men and methods, we'd have heard by now if they Iranians had manage to move their supply of %60 Uranium.

4
Type of Radiation in 60% Enriched Uranium:
  • Uranium primarily emits alpha particles and gamma rays. The alpha radiation comes from uranium isotopes such as 234U^{234}U234U, 235U^{235}U235U, and 238U^{238}U238U, with 234U^{234}U234U being the most radioactive isotope1.
  • In 60% enriched uranium (which is highly enriched uranium), the increased concentration of 235U^{235}U235U and associated isotopes results in enhanced radioactivity compared to natural uranium21.
  • The gamma radiation emitted is typically low-energy gamma rays from uranium and its decay products34.
Detectors Needed to Ensure No Contamination:
  • Because alpha particles have very short range and are difficult to detect in the field, alpha contamination monitors are used as first-level detectors to detect surface contamination4.
  • For uranium contamination, special thin-crystal low-energy sodium iodide (NaI) detectors are very effective at measuring the low-energy gamma rays emitted by uranium and its decay products. These detectors are sensitive and useful in field environments for uranium contamination detection3.
  • Pancake-style Geiger-Müller (GM) probes are popular for detecting all three types of radiation (alpha, beta, gamma) at levels near background and are commonly used for contamination surveys3.
  • For more precise and high-resolution measurements, High-Purity Germanium (HPGe) gamma spectroscopy detectors are used, especially in laboratory or controlled settings, to quantify uranium contamination and enrichment levels accurately4.
Summary:
Radiation Type in 60% Enriched UraniumRecommended Detector Types for Contamination Detection
Alpha particles (dominant)Alpha contamination monitors (close proximity detection)
Low-energy gamma raysThin-crystal low-energy NaI detectors, HPGe detectors (for lab use)
Beta particles (less significant)Pancake-style GM probes (detect alpha, beta, gamma)
Thus, to ensure no contamination from 60% enriched uranium, a combination of alpha contamination monitors for surface detection and thin-crystal NaI detectors or GM probes for gamma radiation detection would be appropriate in field conditions, with HPGe detectors used for detailed laboratory analysis341.
  1. Uranium Toxicity: What Is Uranium? | Environmental Medicine | ATSDR
  2. Enriched uranium - Wikipedia
  3. https://csp.colorado.gov/sites/csp/files/documents/equipselect.pdf
  4. https://www.epj-conferences.org/articles/epjconf/pdf/2023/14/epjconf_animma2023_07005.pdf
  5. Entering Dangerous, Uncharted Waters: Iran’s 60 Percent Highly Enriched Uranium | ISIS Reports | Institute For Science And International Security
  6. Uranium Radiation Properties
  7. https://www.nytimes.com/2025/06/22/us/politics/iran-uranium-stockpile-whereabouts.html
  8. What Is Uranium Enrichment?
  9. 9 Myths About Iran’s Uranium Enrichment Program
  10. https://www.acq.osd.mil/ncbdp/narp/Radiation_Data/Radiation_Detection_and_Measurement.html
  11. https://www.radiacode.com
  12. Model 44-9 Alpha-Beta-Gamma Detector - Ludlum Measurements Inc.
  13. IAEA Director General Grossi’s Statement to UNSC on Situation in Iran | IAEA
  14. Why is Iran producing 60 per cent-enriched uranium?
  15. Uranium and Depleted Uranium - World Nuclear Association
  16. Nuclear Radiation Detector (Geiger counter)
  17. Compact and transportable system for detecting lead-shielded highly enriched uranium using 252Cf rotation method with a water Cherenkov neutron detector - Scientific Reports
 
All this is true. However, suppose they didn't use containers that were specifically engineered to contain this kind of material. In that case, all anyone has to do is get close enough to the point of attack and start taking readings with portable detectors. If any of it was moved by any means other than known and proven containers, there will be significant traces of contamination along the route taken.

Unless it has become classified to protect men and methods, we'd have heard by now if they Iranians had manage to move their supply of %60 Uranium.

Yes, plastic containers don't block radiation like 1000 lb metal casks.

If any of it was moved by any means other than known and proven containers, there will be significant traces of contamination along the route taken.

If the lids are closed, there really isn't going to be contamination along the route.
 
60 pounds of 60% U-235 oxide isn't going to go critical.


2.​


  • In a bare sphere of pure U-235 metal, the critical mass is about 52 kg
  • For 60% enriched uranium metal, the critical mass is ~48–50 kg
  • For UO₂, the effective critical mass is much higher, often >100 kg, because:
    • UO₂ is less dense (≈10.5 g/cm³ vs 19 g/cm³ for metal)
    • Neutron moderation and reflection matter a lot



⚠️ Conclusion:​


No, 60 pounds of 60% enriched UO₂ is not enough to go critical on its own.


Why not?


  • It only contains ~14.4 kg of U-235 — far below critical mass.
  • Being in oxide form further reduces neutron economy.
  • Criticality depends on geometry and the presence of reflectors or moderators — with no special configuration or neutron reflector, this is far subcritical.
Disciple of AI?

The article delves into what you are trying to dispute.
 
Yes, plastic containers don't block radiation like 1000 lb metal casks.

If any of it was moved by any means other than known and proven containers, there will be significant traces of contamination along the route taken.

If the lids are closed, there really isn't going to be contamination along the route.
Contamination more often than not, is found on those who handle the material, not from a leaky lid.

If they were moving this stuff under duress of being bombed at any moment -- likely not the case as they wouldn't have know we were coming -- they would make major mistakes in hygiene and proper containment procedures.

In other words, the people handling the material would most assuredly be the source and trail of any contamination.

Either way, if such a check has been done, it hasn't been leaked to the rest of the world.
 

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