A Tale Of Nuclear Shenanigans From Down Under

April 6, 2025 by Jenny List 47 Comments

It’s likely that among the readers of this article there will be many who collect something. Whether it’s rare early LEDs or first-year-of-manufacture microprocessors, you’ll scour the internet to find them, and eagerly await mystery packages from the other side of the world.

There’s a tale emerging from Australia featuring just such a collector, whose collection now has him facing a jail sentence for importing plutonium. The story however is not so clear-cut, featuring a media frenzy and over-reaction from the authorities worthy of Gatwick Airport. [Explosions&Fire] has a rather long video unpacking the events, which we’ve placed below the break.

Emmanuel Lidden is an element collector, someone who tries to assemble an entire Periodic Table in their collection. He ordered a range of elements from an American element collectors’ supply website, including samples of plutonium and thorium. He seems to have been unaware he was committing any crime, with the microscopic samples available from legitimate websites with no warnings attached. The case becomes murkier as the Australian authorities flagged the thorium sample and instructed the courier not to deliver it, which they did anyway. Then a raid of the type you’d expect for the terrorists who stole the plutonium in Back To The Future was launched, along with that Gatwick-esque media frenzy.

We’re inclined to agree that the penalty likely to be meted out to him for buying a sliver of a Soviet smoke detector embedded in a Lucite cube seems overly steep, but at the same time his obvious naivety over dealing in radioactive materials marks him as perhaps more than a little foolhardy. It’s something over which to ponder though, have we managed to amass anything illegal disguised as outdated devices? Have you? Perhaps it’s something to discuss in the comments.

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Hackaday Links: March 30, 2025

March 30, 2025 by Dan Maloney 12 Comments

The hits just keep coming for the International Space Station (ISS), literally in the case of a resupply mission scheduled for June that is now scrubbed thanks to a heavy equipment incident that damaged the cargo spacecraft. The shipping container for the Cygnus automated cargo ship NG-22 apparently picked up some damage in transit from Northrop Grumman’s Redondo Beach plant in Los Angeles to Florida. Engineers inspected the Cygnus and found that whatever had damaged the container had also damaged the spacecraft, leading to the June mission’s scrub.

Mission controllers are hopeful that NG-22 can be patched up enough for a future resupply mission, but that doesn’t help the ISS right now, which is said to be running low on consumables. To fix that, the next scheduled resupply mission, a SpaceX Cargo Dragon slated for an April launch, will be modified to include more food and consumables for the ISS crew. That’s great, but it might raise another problem: garbage. Unlike the reusable Cargo Dragons, the Cygnus cargo modules are expendable, which makes them a great way to dispose of the trash produced by the ISS crew since everything just burns up on reentry. The earliest a Cygnus is scheduled to dock at the ISS again is sometime in this autumn, meaning it might be a long, stinky summer for the crew.

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Mining And Refining: Uranium And Plutonium

April 24, 2024 by Dan Maloney 40 Comments

When I was a kid we used to go to a place we just called “The Book Barn.” It was pretty descriptive, as it was just a barn filled with old books. It smelled pretty much like you’d expect a barn filled with old books to smell, and it was a fantastic place to browse — all of the charm of an old library with none of the organization. On one visit I found a stack of old magazines, including a couple of Popular Mechanics from the late 1940s. The cover art always looked like pulp science fiction, with a pipe-smoking father coming home from work to his suburban home in a flying car.

But the issue that caught my eye had a cover showing a couple of rugged men in a Jeep, bouncing around the desert with a Geiger counter. “Build your own uranium detector,” the caption implored, suggesting that the next gold rush was underway and that anyone could get in on the action. The world was a much more optimistic place back then, looking forward as it was to a nuclear-powered future with electricity “too cheap to meter.” The fact that sudden death in an expanding ball of radioactive plasma was potentially the other side of that coin never seemed to matter that much; one tends to abstract away realities that are too big to comprehend.

Things are more complicated now, but uranium remains important. Not only is it needed to build new nuclear weapons and maintain the existing stockpile, it’s also an important part of the mix of non-fossil-fuel electricity options we’re going to need going forward. And getting it out of the ground and turned into useful materials, including its radioactive offspring plutonium, is anything but easy.

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Retrotechtacular: Some Days You Just Can’t Get Rid Of A Nuclear Bomb

February 15, 2024 by Dan Maloney 19 Comments

It may seem a bit obvious to say so, but when a munition of just about any kind is designed, little thought is typically given to how to dispose of it. After all, if you build something that’s supposed to blow up, that pretty much takes care of the disposal process, right?

But what if you design something that’s supposed to blow up only if things go really, really wrong? Like nuclear weapons, for instance? In that case, you’ll want to disassemble them with the utmost care. This 1993 film, produced by the US Department of Energy, gives a high-level overview of nuclear weapons decommissioning at the Pantex plant in Texas. Fair warning: this film was originally on a VHS tape, one that looks like it sat in a hot attic for quite a few years before being transferred to DVD and thence to YouTube. So the picture quality is lousy, in some points nearly unwatchably so. Then again, given the subject matter that may be a feature rather than a bug.

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New Drug Has Potential As Dirty Bomb Antidote

May 25, 2023 by Dan Maloney 39 Comments

It perhaps goes without saying that one nuclear bomb can really ruin your day. The same is true for non-nuclear dirty bombs, which just use conventional explosives to disperse radioactive material over a wide area. Either way, the debris scattered by any type of radiation weapon has the potential to result in thousands or perhaps millions of injuries, for which modern medicine offers little in the way of relief.