Maybe some were. I'm basing it off a comment from a professor regarding nuclear power in small electronics. Quote (from memory, thus unreliable) below:
"So, they tested these things for all the possible stresses they would encounter -- high G maneuver and impact if they were in a car wreck, crushing force, electrical damage (from a lightening strike, etc), anything that they were likely to encounter whilst inside a human body. However, they were never thermally tested -- after all, why would the human body ever experience >1000 degrees F?
Ends up the answer is cremation. So, for a while, a major hazard around funeral homes was radioactive crematoriums."
Comments
Maybe some were. I'm basing it off a comment from a professor regarding nuclear power in small electronics. Quote (from memory, thus unreliable) below:
"So, they tested these things for all the possible stresses they would encounter -- high G maneuver and impact if they were in a car wreck, crushing force, electrical damage (from a lightening strike, etc), anything that they were likely to encounter whilst inside a human body. However, they were never thermally tested -- after all, why would the human body ever experience >1000 degrees F?
Ends up the answer is cremation. So, for a while, a major hazard around funeral homes was radioactive crematoriums."
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1279940/
Also apparently a mercury hazard.