Article View: sci.materials
Article #229Re: Uses of Be
From: Kevin Weber
Date: Mon, 12 Oct 1992 13:53
Date: Mon, 12 Oct 1992 13:53
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2066 bytes
> "Death may result from short exposure to incredibly low concentrations. > Acute: pneumontis may result from single exposure to berylium > and accasionally is fatal. Chronic: pulmonary granulomatous > disease may appear in 3 months to 6 years, often after short > exposure to low concentrations. Uncertainty as to complete > recovery. Death rate about 25%. Rewiew: "Berylium > and Berylliosis" by J. Schubert in Sci. American 199, > no 2, pp 27-33 (Aug. 1958)" > -- Look at the date of that article! No one has died of berylliosis in 30 YEARS!!! There have been 2 (yes, count them, 2) cases of berylliosis in the last 20 years. The toxicity of beryllium is ONLY related to powder form. Contact in any other pure form is absolutely harmless. Back in the 50's when beryllium was becoming popular, some workers contracted berylliosis. Only a small fraction of people, about 3%, can even get berylliosis at any exposure level. Most of us are totally immune to berylliosis. There was an immediate panic, evidenced by your quote. Research quickly determined that dry machining and ore crushing operations caused the dust which caused berylliosis. Here at Lockheed we constantly use beryllium, it has many properties unmatched by any other material known to man, and it is extremely harmless when proper precautions are followed. You could propably find a 50's article which shows the benefit of cigarette smoking. I suggest to look into more recent work in the area. kevin weber
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arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!ames!kronos.arc.nasa.gov!iscnvx!enterprise!newsReferences:
<1992Oct7.222241.148720@ns1.cc.lehigh.edu> <1992Oct10.130849.1024@dmp.csiro.au>Show Full Headers
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Newsgroups: sci.materials Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!ames!kronos.arc.nasa.gov!iscnvx!enterprise!news From: WEBER@JEDI.SSD.LMSC.LOCKHEED.COM (Kevin Weber) Subject: Re: Uses of Be Message-ID: <WEBER-121092064724@129.197.66.249> Followup-To: sci.materials Sender: news@enterprise.rdd.lmsc.lockheed.com Nntp-Posting-Host: 129.197.66.249 Organization: 78-30 References: <1992Oct7.222241.148720@ns1.cc.lehigh.edu> <1992Oct10.130849.1024@dmp.csiro.au> Date: Mon, 12 Oct 92 13:53:50 GMT Lines: 31