@tim not a numbers man I see !
@tim , surely you jest , but there is no such thing as safe radiation levels as it is cumulative in it's effect as my old physics professor used to say and only requires a minor change in DNA to cause measurable long term damage !
However , since a number of these weapons involved the use of pure plutonium the majority of which is not consumed in the chain reaction explosion by the way and whose toxic effects are off scale too!
You appear to have forgotten to mention the bulk of the early Radiation Researchers died quiet young from assorted lethal career self induced cancers or what happened to large number of miners hired to work the US Uranium mines with no attention to any mine safety standards period . Or the even more unfortunate "Radiation Girls" (the company involved in that scam pulled strings in high places to avoid paying up like real men !). Then go on to miss some five hundred square miles of closed , sealed and uninhabitable land almost impossible to clean up with current technology for the next 25,000 years in a place called Hanford , Washington State where the Columbia River flows(Generation one reactors were all open loop direct river water cooled) or the many evil illegal without consent tests conducted on the states inhabitants allegedly in the name of science but more like war crimes exposed in a place called Nuremberg carried out in two other countries if truth be told .
I seem to recall that the US government now has on very urgent recall the several million odd samples of a substance called trinityite glass that was foolishly handed out quite freely to tourists to ground zero not all that long ago because of it's hidden long term effect of slowly killing the owner by degrees but that be another tale !
Yeah , as they say the radiation industry and the old test sites are truly safe until you run the numbers game relative to occupations and then the cluster effect clearly shows through !
Such is life , for we all live and die by numbers in this universe !
As for the Heavy Cruiser "The Prinz E." , the intertubes has all the answers for questions about what really happened to the missing three props !