Nuclear Waste (Generic)

Nuclear waste is a dangerous byproduct of nuclear fission in reactors. It is not a single material or element, rather, it is a miscellaneous collection of fission, decay, and neutron capture elements (e.g. caesium, palladium, americium, radium, etc. isotopes) products produced from fission reactions a nuclear reactor. It is highly radioactive and hazardous, even in small amounts.

Production
Tiny piles of waste can be extracted from spent/depleted nuclear fuel via Centrifuging.

This particular type of nuclear waste can be extracted from the RBMK waste variants of: Long-Lived and Short-Lived Nuclear Waste.

Waste can be extracted from the waste barrels found in the Desert Atom structure.

Nuclear waste can be bred from unenriched Plutonium and Pu240. Requires 4 and 3 HEAT, respectively.

Uses
As a waste product, it has little uses. However, it does have a few specialized uses. Tiny piles can be used to make nuclear bullets and normal-sized pieces can be used to make cloud barbed wire and vegan schnitzels.

It can be used in a Custom Nuke to "salt" it. Normal-sized pieces contribute to a 1.025 multiplier and blocks contribute 1.25, making pieces better than blocks.

You can also make Schrabidium with it by detonating barrels it near Uranium Ore as it can create a dirty explosion when in a steel tank.

Disposal Methods
It can be made into radioactive blocks for storage and as a quick, cheap, but unsafe means of disposal. They are very radioactive and inflict the Contaminated 3 status effect for 30 seconds when walked on. Even a single block can easily contaminate a chunk. Nuclear waste blocks also produce Fallout continuously, which can be farmed for tiny amounts ofCobalt-60, Radium-226, and even Gold-198. Keep note that: nuclear waste blocks also produce a lot of Radon gas, which is the source of the fallout and cannot be blocked by gas masks.

The cheapest method of disposal other than straight-up blocks of waste is to simply paint said blocks. It is basically the same as the regular waste block but with a yellow radiation hazard sign painted on it. Crude, but more visually noticeable than a plain black block.

Another method is to put it into a barrel. It is identifiable (yellow), deconstructable, cheap, and is less hazardous than regular blocks. It only becomes especially hazardous when in large numbers. However, do not underestimate them, if you do make a lot of them, they can easily kill anything or anyone that gets too close to a dump site with these. They are useful in Schrabidium production as they can explode in a dirty fashion. It can also be used in the custom nuke to salt it, contributing a 1.2 multiplier to that stage. Barrels also do not produce extra fallout and Radon. However, they will release  a lot  of Radon if they explode.

The final method, considered the safest, but also the most expensive, is Vitrification. It is similar in appearance to the regular radioactive barrel (white instead of yellow). It is less radioactive than the prior methods, however, it cannot be disassembled for the waste.