So if other things could have caused cancer, we just can't establish whether the nuclear industry caused it, and we should just assume it is not there? *Traitor*, n. A benighted individual who perceives an illusory distinction between serving his nation and abetting the criminals who govern it.
If people did zillions of epidemiological studies of coal plants - and they don't - one would find cancers as well.
If we did studies of people who work with silicon, we might find something there.
I don't understand why only nuclear energy gets an "assumption" of cancer. I'll bet that the number of cancers of the lung resulting from air pollution number in the millions each year.
People are studying the effects of silicon, and in the Netherlands working with sandstone (cutting, polishing) is classed as dangerous (or higher?) than removing asbestos.
We should ban sand!! No, wait...