The accidents you described didn't come from nuclear power plants. The Western Australian incident was mining equipment. The Goiânia accident happened in Brazil and was medical equipment. The Kramatorsk radiological accident was also mining equipment.
itishappy|2 years ago
> The capsule, part of a gauge used to measure the density of iron ore...
https://www.aljazeera.com/news/2023/1/31/australian-nuclear-...
More info:
https://en.wikipedia.org/wiki/Western_Australian_radioactive...
Terrifying Wikipedia rabbit hole:
https://en.wikipedia.org/wiki/List_of_orphan_source_incident...
patmorgan23|2 years ago
Also medical radiation machines around the time that
sbierwagen|2 years ago