TL;DR: it became the Demon Core, after its core was repurposed in criticality experiments with poor methodology. Though the article is mostly about the politics of Japan's surrender, and of maybe/not dropping the third bomb.

Kinda offtopic:

> Private Robert Hemmerly, was also irradiated but survived, only to die of cancer 33 years later.

The phrasing is odd, "only to ..." is a colloquialism to indicate bad luck, as in to escape one bad event only to immediately fall to another bad event.

But living 33 more years is a good amount of life! (and long enough interval to start doubting a direct causality between the irradiation and the cancer)