[ RadSafe ] CORRECTION Radon Units

[Howard]

"Radon levels are given in the widely used units of r (o) = 37 Bq m (-3 exponent), (1.0 pCi L -1 exponent)."
( I do not see how to show exponents on my iPad. Sorry. Thank you Chris for catching this.)
Quote is from: Test of the Linear-No-Threshold Theory of Radiation Carcinogenisis for Inhaled Radon Decay Products, Bernard L. Cohen, Health Physics Feb 1995.

My description should have read, "mean radon level, r/r o" 
The action level recommended of 4 r/r o did show powerfully significant 
fewer lung cancer deaths than at the most common level, 1/4 that.

Howard Long

On Jun 19, 2011, at 2:56 PM, "Chris Hofmeyr" <chris.hofmeyr at webmail.co.za> wrote:

> I think you mean 2-4 pCi/L, which is about 50-100 Bq/m3 ?
> 
> chris.hofmeyr at webmail.co.za
> 
>  
> 
> On Sun, 19 Jun 2011 11:50:21 -0700 Howard wrote
> 
> 
> Chris,
> You write, "-  there happens to be a negative correlation between smoking prevalence
> and radon concentration." (below).
>  If so, how much? I am troubled by your lack of numbers. It suggests lack of objectivity.
> Non-smokers and smokers alike had FEWER lung cancer deaths when exposed to 2-4 Bq/cunic meter of radon than to smaller doses, in Cohen's massive study.
> 
> For the importance of your giving numbers, consider rat poison. It reduces total mortality rates in humans with auricular fibrillation, when taken in doses giving about twice the usual clotting time, so is taken by millions of Americans.
> 
> Howard Long
> 
> On Jun 19, 2011, at 3:10 AM, "Chris Hofmeyr" <chris.hofmeyr at webmail.co.za> wrote:
> 
> there happens to be a negative correlation between smoking prevalence
> and radon concentration
> =
> 
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