Interesting. Bring on the A-bomb foundries! Had this been discovered during the exploration phase of atomic bomb use we probably would have seen A-bomb foundry proposals.
There is a hypothesized process in this paper that sounds like a graduate thesis on its own.
The paper explains it more as an experimental process than a manufacturing process. Each granule of hiroshimaite captures a "unique" micro-environment. One could imagine an ethical version of this involving conventional explosives in a controlled environment containing a variety of metallic samples of different compositions.
Hey! ,this is great! next we can have moskitonium, londinium(heh), and washingtondcinite, rare valuable collectables for some far future alien travellers
There is a hypothesized process in this paper that sounds like a graduate thesis on its own.
https://www.ans.org/news/article-1858/elk-river-rural-americ...