The thing to remember with this bad boy is they’ve got active gamma emitting fission products floating in it and (when it could still go critical) fast neutrons. Not s something you want to brew your coffee in, even without the heavy metal poisoning uranium oxide could give you.

What’s cool about this reactor is it was doing something that we generally can’t do too well. Unenriched uranium reactors tend to need heavy water or graphite to slow down the neutrons from fast to thermal to keep a reactor critical This guy used ground water.