Every element after Uranium on the periodic table, that is, the ones that have a larger atomic number than 92, are created in the laboratory. They are not naturally occurring, unless you count things like debris from supernovas or nuclear explosions. Guys like Ernest O. Lawrence (he of Lawrence Livermore National Laboratory, Lawrence Berkeley Laboratory, and Lawrence Hall of Science fame) was one of the folks responsible for this “trans-uranic” stuff. If you bombard some elements with neutrons, or smash some nuclei together, you can get new elements. There are eleven transuranic elements (#93-103) in the actinide series that make up the lowest row of the table, and fifteen more (the “superheavies” from #104-118) filling out the bottom right of the main group.
So uranium is the last of the natural order of things. It’s the biggest and the baddest of all the natural elements. It has the most protons (92), the most electrons (92), and the most neutrons (146). The listed atomic weight for uranium is 238, the highest of the natural elements. Plutonium is the most massive at 244, but it is number 94.
A cubic inch block of pure uranium weighs about two-thirds of a pound.* It’s very dense stuff and so-called “depleted” uranium is used in armor-piercing shells (tank and anti-tank weapons) by the US Army. Depleted uranium is the stuff leftover from “enrichment” which separates the desirable U-235 isotope from the more abundant U-238. You need U-235 for fission reactors.
Speaking of that, our TechBro Overlords are making nuclear power fashionable again. They want to use nukes to power their precious data centers. These people are assholes who want to fuck up the world for the rest of us. Their puppet Donald is relaxing the safety rules on nuclear power stations so these very rich and very powerful people can have lots and lots and lots more electricity.
Hey, I don’t have an issue with nuclear power. We need it. But we need it done properly. And we need national oversight of the industry and strict safety and environmental laws. But that’s a joke with these people and their Republican lackeys.
And we certainly don’t need these fucking data centers and the AI crap they are shoving down our throats. It’s too bad that new tech like AI, which certainly has many wonderful applications, will be ruined by the greed, mendacity, just plain old creepiness of our celebrity capitalists.
Back to that cubic inch block of uranium. According to these nuke guys, a kilogram of uranium can generate 24 million kilowatt-hours of heat energy and thus 45,000 kW-h of electricity. So our piece comes in at 30% of that or about 13,500 kW-h. Compare that to coal where one kilogram creates a mere EIGHT kilowatt-hours of heat energy. Uranium is THREE MILLION times more energy-rich!! That’s six orders of magnitude.
Now do you see why people keep coming back to uranium and nuclear power?
World uranium production is about 60,000 tonnes per annum, led by Kazakhstan, Canada, and Namibia.
Denver-based Energy Fuels, Inc. (UUUU) claims that their Pinyon Plain Mine in Arizona is “the highest grade uranium mine in the US.” (Disclaimer: I’ve a wee bit of stock in Energy Fuels, Inc.)

*(1 cu. in. ~ 16 cm3; density ~ 19 g/cm3; 16 x 19 = 304 grams; 454 g ~ 1 pound; 304/454 = 0.67 lb.)










