[ RadSafe ] is uranyl oxide gas the greatest threat from the actinides?

[James Salsman]

Is there any risk from nuclear power or any other use of the
actinide elements which exceeds that of exposure to uranyl oxide 
gas UO3(g)?

I do not know of any such risk.

We all need to know the long-term implications.

Isn't there some dark corner of history where humans got
involved with exposure to chemical teratogens?

Sincerely,
James Salsman