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- From: jmc@SAIL.Stanford.EDU (John McCarthy)
- Subject: Re: Notch another one up for the Greennazis
- In-Reply-To: stead@skadi.CSS.GOV's message of 20 Nov 92 15:34:18 GMT
- Message-ID: <JMC.92Nov20140546@SAIL.Stanford.EDU>
- Followup-To: sci.energy
- Sender: news@CSD-NewsHost.Stanford.EDU
- Reply-To: jmc@cs.Stanford.EDU
- Organization: Computer Science Department, Stanford University
- References: <1992Nov17.184444.29099@murdoch.acc.Virginia.EDU>
- <JMC.92Nov19215037@SAIL.Stanford.EDU> <51524@seismo.CSS.GOV>
- Date: 20 Nov 92 14:05:46
- Lines: 49
-
- In article <51524@seismo.CSS.GOV> stead@skadi.CSS.GOV (Richard Stead) writes:
- In article <JMC.92Nov19215037@SAIL.Stanford.EDU>, jmc@SAIL.Stanford.EDU (John McCarthy) writes:
- > Physics Prof. Bernard Cohen of Pittsburgh University and Chairman of the
- > Health Physics Society once offered to eat a gram of plutonium oxide
- > and to breathe a liter of plutonium oxide particles that would stay
- > suspended in air for one minute. He estimated that the reduction of
- > his life expectancy would be equivalent to taking a six month sabbatical
- > in Denver Colorado, which has more cosmic radiation than Pittsburgh
- > because of its 5,000 foot altitude.
-
- What he hasn't considered here is that he would absorb some of the Pu, even
- as an oxide. It takes only a fraction of a nanogram - that will go directly
- to the bones, where short-range high-energy alphas will cause leukemia in
- short order. So the gammas he is exposed to for a minute would be like
- living in Denver for 6 months, but when you return from Denver, you don't
- carry anything with you (except your luggage, provided the airline didn't
- lose it).
-
- (And come to think of it, the leukemia is incurable, since the standard cure
- is to wipe out and replace the bone marrow. The new marrow would get
- irradiated and start the process all over again).
-
- I would, however, be perfectly comfortable in a room with a solid chunk
- of Pu. It isn't giving off all that many gammas, and the alphas get nowhere.
- Just so long as it isn't airborn, who cares.
-
-
- --
- Richard Stead
- Center for Seismic Studies
- Arlington, VA
- stead@seismo.css.gov
-
- I admire Richard Stead's assurance in telling us what the President of
- the Health Physics Society didn't consider. I wouldn't be surprised
- if Cohen, whose subject this is, had written a book with tables in it
- about how much plutonium is absorbed when plutonium oxide passes through
- an animal digestive tract, how much is excreted at what rate, and how
- much in the bones gives what risk of leukemia over what period. Why
- not try his book
-
- 28.5) Cohen, Bernard Leonard, 1924-. NUCLEAR SCIENCE AND SOCIETY. [1st ed.].
- (Garden City, N.Y., Anchor Press, 1974)
- LOCATION: Physics QC776.C56
- --
- John McCarthy, Computer Science Department, Stanford, CA 94305
- *
- He who refuses to do arithmetic is doomed to talk nonsense.
-
-