Dose

Problem with getting dosed is most nuclear contamination is not a one time event. If not cleaned up nuclear doses can continue to contaminate for 100's of years. And Fukushima keeps emitting more everyday.

Time and distance is not so much a factor after periods of initial release because the long lived materials keep being distributed through the food chain.

As for the USS rr, I wonder if the crews' quarters were cleaned up? IOW, was the whole ship scrubbed, or just the deck? Air supply systems? Water supplies?

This points out the unique problems with nuclear contamination. Maybe this trial will help get the Truth out?