[meteorite-list] Meteorite Consumption

From: Charles Viau <*cviau_at_meteoritecentral.com*> Date: Thu Apr 22 10:17:47 2004 Message-ID: <000a01c3c205$e6188ee0$1800a8c0_at_chupa> · cviau_at_meteoritecentral.com

--
> -----
> >
> > MexicoDoug_at_aol.com wrote:
> >
> > > Bob - Not Chondrite Lung disease.  Just Garden variety lung and
nasal
> > > cancer.
> > >
> > > CharlyV - First my geocities site has gremlins, and now Bob M.
can't
> > > do his hobby in peace without fear of catching some fierce E.T.
> > > disease...you're a real hypochondrite, man !!
> > >
> > > Just joking Charly, for what it's worth I'm a chemist, and CharlyV
is
> > > right on (Peace).
> > >
> > > According to the American EPA (see link), it is a linear response
> > > relating refinery dust (includes sulfides), if your breathe it
> > > chronically you will have one in 10,000 odds, at 0.0000004 grams
per
> > > cubic meter of air.  That is considered quite large by
toxicologists
> > > (chemist usually don't read the instructions, so chemists aren't
> > > usually of much help...their life spans are on the average 10
years
> > > less, too, really, and lets not look at the last years of
quality).
> > > So it is a recognized human carcinogen.
> > >
> > > They further say it is a linear cause effect relationship and show
> > > some epidimological numbers.  Which roughly translate that
snorting
> > > 0.000146 grams per cubic meter of air for just one day of the year
> > > having the same 1 in 10,000 results.  Or looked at another way:
The
> > > average person breathes about 8 cubic meters of air per day.
These
> > > odds are for 1.17 mg total breathed in in one day.  At 0.117 gram
per
> > > day of Ni dust, one day a year...you have 1 in a 100 chance. of
> > > getting these cancers.  Or at least one person on this list.  My
> > > extrapolations are not rigorous...but they shouldn't be unfounded,
> > > either.
> > >
> > > Did Nininger live to be 99 years old?  Goes to show that
individual
> > > response and statistics are two separate issues...but a dust mask
is
> > > definity a good idea.  Enough people get colon cancer from eating
> > > barbecued and smoked foods, to make it  believable that ingesting
> > > burnt out stardust has a lot of inorganic nasties besides just
> > > worrying about nickel.  One could always drop cutting and
polishing
> > > for rose-garden tending...or just not breath that interplanetary
and
> > > intergalactic dust in.  Its not the same stuff Tinkerbell blows
magic
> > > spells with...even though its nice to let the imagination run...
> > >
> > > http://www.epa.gov/iris/subst/0272.htm
> > >
> > > (this is the closest match the EPA has investigated.)
> > >
> > > Saludos
> > > Doug Dawn
> > > Mexico
> > >
> > > En un mensaje con fecha 12/12/2003 11:36:54 PM Mexico Standard
Time,
> > > cviau_at_beld.net escribe:
> > >
> > >
> > >> Asunto: RE: [meteorite-list] Re: Cutting Meteorites
> > >> Fecha: 12/12/2003 11:36:54 PM Mexico Standard Time
> > >> De: cviau_at_beld.net
> > >> Para: meteorite-list_at_meteoritecentral.com
> > >> Enviado por Internet
> > >>
> > >>
> > >>
> > >> Yes, but only for a dremmel. You pro's cut with big equipment and
> > >> use
> > >> liquid
> > >> Coolants that must trap all of the dust. A dremmel using a
cutting
> > >> wheel
> > >> really puts out a lot of dust in the air. Not being a chemist, I
do
> > >> think that airborne nickel dust might be poisonous... A dust mask
> > >> cannot
> > >> be a bad idea.
> > >>
> > >> CharlyV
> > >>
> > >> -----Original Message-----
> > >> From: meteorite-list-admin_at_meteoritecentral.com
> > >> [mailto:meteorite-list-admin_at_meteoritecentral.com] On Behalf Of
Bob
> > >> Martino
> > >> Sent: Monday, December 01, 2003 1:03 PM
> > >> To: meteorite-list_at_meteoritecentral.com
> > >> Subject: [meteorite-list] Re: Cutting Meteorites
> > >>
> > >> CharlyV points out that one should always use a dust mask when
> > >> cutting
> > >> meteorites.
> > >>
> > >> Great. As if my life wasn't complicated enough, now my hobby has
a
> > >> new
> > >> hazard associated with it:
> > >>
> > >> "Chondrite Lung Disease"
> > >>
> > >> -----
> > >> Bob Martino, Tucson, AZ
> > >>
> > >> Can you really name a star?  Read the Truth!
> > >> http://home.columbus.rr.com/starfaq/
> > >> .
> > >>
> > >> >Subject: FW: [meteorite-list] Cutting Meteorites
> > >> >
> > >> >This response got lost somehow. re-posted here, likely an
> > >> attachment
> > >> in
> > >> >thread exceeded text size limit..
> > >> >
> > >> >The Dremmel diamond blades are nice, but don't use them on irons
or
> > >>
> > >> even
> > >> >H chondrites. They just cannot take the punishment and your $15
or
> > >> $20
> > >> >goes up in smoke in a few small slices. (even with lube).
Believe
> > >> that
> > >> >the #420  cutoff wheels (tungsten carbide with quartz) used
with
> > >> >paraffin work better. Try it yourself. You also get 20 for about
> > >> $4.00,
> > >> >good for a lot of cuts, and remember to use that candle.  (oh.
and
> > >> eye
> > >> >protection and a  silk scarf over your nose/mouth or one of
those
> > >> cheap
> > >> >construction dust masks.)
> > >> >
> > >> >CharlyV
> > >>
> > >>
> > >
> > >
> > >
> >
> >
> > ______________________________________________
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> >
>
>
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