Gamma radiation (my life's work testing atom bombs and cobalt irradiation)
definitely kill spores, but the places that will allow you to do it seem few
and far between.  The radiation facilities usually are pretty clean, so they
don't want any dripped honey or dead bees on the floor.  Massachusetts does
some of it.  Get hold of Garry Libbee about their program.  New Jersey "used
to" but I think they stopped it.
The cost is what you can arrange, maybe as cheap as $3 for a deep body - I am
not sure.
Surely there must be someone on the West coast that knows about it.  How about
Jim Bach up in Washington State.  Jim usually know about most things and is a
very
helpful and knowledgeable guy.  Looks like my April Bee Culture has "taken
legs" or I would give you Jim's E-mail address.
Every now and then I have found someone who won't use radiation for fear that
"things get HOT"  Of course, there is no heat involved, just like you getting
a chest
X-ray.  If Maryland had a radiation facility, it would be my #1 choice., but
we can use ETO, so that is good too.
I hope I have helped
Shucks, I just thought of Jim Selway at Montana University, and he is a fine
dictionary.  Just fine an April Bee Culture Magazine for those addresses.
                                                                                                                George Imirie