I was wondering about having a new item ingame which is the result of machining via Manufacturer :
Nuclear Waste + Encased Industrial Beams + Heavy Modular Frames + another ore (since graphite is not an option atm). In a slow and VERY expensive manner of course
The new Compacted Waste (or whaterver the name may be) would eventually grant a lower amount of the total waste stacks and a lower RANGE of radioactivity only once stored
(I do also support the idea of dedicated shielded container, as already suggested, having an almost zero emission radius result if filled with treated waste material - but without removing radioactivity for good for the sake of challange)
What do you think?