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.
There's an interesting YouTube channel called Plainly Difficult that goes over industrial accidents, many of them nuclear/radiation in nature. (https://youtube.com/@PlainlyDifficult)
Also medical radiation machines around the time that
I love his radiation incident videos and it's sad he seems to have run out of them. The structural failure and trainwreck videos just don't scratch the same itch for me.
