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RE: tungsten anyone?
Original poster: Frank <fxrays@xxxxxxxxxx>
Hi All,
I posted earlier about out gassing radioactive 
vapors for those who are really concerned.
Truth be known, you have more radiation inhaled 
in the form of radon gas in your basement, for 
those who have them or in a well sealed house.
There is far too much paranoia about this stuff than merits the fears.
Most of us have smoke detectors in the house that 
emits more radiation that what little would ever 
come out of the electrodes during operation.
Now, if you ran the coil 24 hrs a day/ 365 days a 
year in a small room with little or no air 
exchange, then there might be some possible 
concern but the EM and ozone would do a lot more damage!
Like running any coil, just make sure you have 
adequate ventilation and that is for your ozone concerns!
If it was a danger to use thorium electrodes, 
they would have been outlawed years ago.
Thanks, Frank
At 03:40 PM 2/11/2007 -0700, you wrote:
Original poster: Mike <megavolts61@xxxxxxxxx>
Hi All,
   I doubt there's really enough Thorium oxide 
created to cause concern.  At 2%(by wt, I 
presume),  and the tiny amount of material 
oxidized - even over a year's time would not 
amount to much.  Welder's go through quite a 
few of those rods they use per year .  Thorium 
has a very long halflife, so the specific 
activity is pretty low.  Plutonium's 24000 yr 
halflife would present a much higher 
danger.  Polonium 210's half life is so short 
by comparison(138 days) that a gram of it 
encapsulated in a stainless steel capsule will 
raise it's own temperature to as much as 500º(I 
picked that because of that Russian spy who was 
killed with it).  Plutonium in metal form will 
actually feel warm, but nothing like 
Polonium.   Uranium and Thorium have half lives 
in the billions of years for the main naturally 
occuring isotopes (Th 232 and U 238).  You 
could hold a ten lb hunk of either and not notice any temperature.
   They wouldn't use them in welding if they 
presented much of a hazard.  I'd avoiding 
breathing any dust or oxides, but you wouldn't 
want to breathe the tungsten oxide dust either.
Mike
Hi Anthony,
One has to wonder how much radiation is gased out on a rotary spark
gap...
We are running multiple rods not just one.
Jim Mora
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