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| Re: Barnesite
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Stephen Campbell on January 25, 2001 07:30:32 UTC |
Barnesite is a mixture of cerium oxide and radioactive thorium oxide if i remember correctly,i knew an optician here in tucson who passed away a few years ago,he was a member of the team that made the 4-meter mirror for the mayall scope on kitt peak, they used barnesite,and all these guys are dead now from stomach and/or lung cancer from breathing in the fine particles of this polishing agent.
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