Study on Radiativity o Granite Counter Top Does Not Show Level o

You will see that the increase of radiation is either not significant compared with the backtground level (which is very low) or way down from EPA guideline of safety concern.

You don't really hear workers in stone quarries just drop dead near and far, do you?

Please check the following link:

http://hps.org/documents/Radiation_granite_countertops.pdf

所有跟帖： 

• Thanks. How about marble? -swj2000- ♀ (0 bytes) () 06/11/2013 postreply 09:10:26

• 好像是说浅色石头放射性比深色的低。当然是相对而言 -monochrome- ♀ (0 bytes) () 06/11/2013 postreply 09:59:06