Chernobyl at 40

[Marlin]

The article is a bit long but well written. I was working at a power plant in the Midwest at the time. We took the top shield off of a CAM and inverted the detector making it columnated to the sky. We could not quantify or identify isotopes, but we could see the cloud as it passed over.

Chernobyl at 40

https://world-nuclear-news.org/articles/chernobyl-at-40-the-accident-its-impact-and-how-it-changed-the-worlds-nuclear-energy-industry