My father is currently surviving two, unrelated, cancers.
Noone will ever know why he rolled the wrong number on the dice. Twice.
He, however, has wondered if it was the time he spent sitting on top of crates in RAF cargo planes, back when the south pacific testing was going on.
There will never be any proof either way.
Everyone that you know has experience of cancer. Radiation increases cancers. Except, of course, when that radiation is part of an UNSCEAR document.
A banana is 40x more dangerous than Chernobyl and all the atmospheric tests put together. (i know that's not exactly what you said! ; )
Lake Karachay is an open air lake in the former USSR. A 1990 study found that standing on its shoreline would give a does of about 600 Roentgen in an hour. That's just over 5.5 Sieverts. The xkcd file lists 4 sieverts as a 'usually fatal dose'
Karachay was confined (slightly) until the lake started to dry due to a drought, and the silt started moving. But, even though its probably the most polluted place on the planet, it wont come under the 40x statement. At least not until its contents find themselves in your grandchildrens milkshakes. But someone might, i guess, get to cleaning it up before then?
B30 (i got the number wrong before) also wont contribute to the figures yet. And may never do so - except whatever leaked into the ground water this morning. Neither will B29 (the second most dangerous place in western europe)
Maybe it can all be buried in a hole and will never become part of the mentioned figures. Realistically, it wont all be though, in the same way Karachay wont. Or Fukishima, TMI, etc. etc.
Most, most of the time is the best anyone can hope for. Not all, all of the time.
The nuclear age was 73 in December, and this year will see the 70th anniversary of the trinity experiment. 73 years of creating stuff that, unless you are one of the few that believe UNSCEAR, is actually pretty grim. Too grim even to clear up when you leave it lying about.
Again, im not telling you what to do - its not like that would get anyone anywhere!