Kosmos 954: Nuclear Crash Cleanup

In 1978, a Soviet Union nuclear reconnaissance satellite named Kosmos 954 crash-landed in Canada, carrying its 50kg uranium core. This incident prompted a massive cleanup operation to address the radioactive material. However, the locals residing in the area at the time were largely unaware of the incident. After 10 months and an expenditure of $6 million CAD, an American-Canadian team failed to recover 99.9% of the uranium fuel, despite covering 50,000 square miles.