Highly unlikely that the radiation contributed to his death in any way. The highest levels of radiation produced by atomic bombs tend to dissipate fairly quickly (short half life or are simply dispersed by win and rain) after detonation. Being near the detonation or around ground zero very shortly thereafter can cause serious radiation exposure. However, weeks or months later the radiation has already started to dissipate.
In December 1961, the United States detonated an atomic bomb in a salt dome about 40km south of Carlsbad, New Mexico. Six months later, crews drilled down and entered the cavity created by the detonation. While radiation still existed, the intense radiation created by the blast had long dissipated.
If you read my other posts, you'd realize that I was making that point. He died at 96. It is like blaming George Burns' death on cigars when he died at age 100.
Here's a site and some links put together with the help of atomic test veterans. Are you referring to the Nougat test in 1961 by chance, not sure if that was the Carlsbad one..
Quite a few blasts were set off over the years here in the homeland.
Atmospheric Atomic Weapons Tests
Atomic Veterans History Project
Like I said, we'll never know.
Looks like atomic weapons are good for business.
Clears out the dead wood.
Brings about peace.
Encourages people to live in peace as opposed to opening their yaps about ruling the world or wiping this or that country off the face of the earth.
I say, "Peace through superior firepower".
You must have forgotten about Cobalt Thorium G...