My condolences on the loss of your husband. I have had a mother, father-in-law and brother-in-law die painfully of cancer. My wife and I have both had cancer but were cured by early detection and treatment. We know it is painful.
Radiation was discovered in the 19th century. Early users were enthusiastic, but soon cancers of limbs showed up. The first international conference on protection standards was in 1928! There has been oodles of research on the health effects and beneficial uses of radiation over the years, and it continues. Science knows the safe limits.
For example, we use radiation for killing hundreds of times each day - in radiation treatments to cure cancer.
Now we can detect the tiniest amount of radiation with the advanced electronic instruments that we have available. Just because something is detected does not mean there is enough of it there to cause harm! Look up the limits on strontium-90.
Watch New Mexico. A town there with lots of wide open spaces is bidding to take all the used fuel. They will safely make a lot of money from it.