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Old 4th May 2015 | 13:09
  #31 (permalink)  
Denti
 
Joined: Mar 2001
Posts: 4,563
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From: I wouldn't know.
A few millimeters of metal won't help in any way against cosmic radiation. You would need a few meters of lead or paraffin concrete to block that out.

In that regard there is no difference between metal and carbon.
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