irradiation of thiobacillus

GEO geo at
Fri Nov 6 16:28:03 EST 1998

Hello All,

I'm trying to find the total dossage required to sterilize a sample of
gold tailings using a cobalt-60 source.  As long as the thiobacillus
ferro-oxidans is irradiated, that should be sufficient.  A short
literature review mentionned both 2 Mrad (1969) and 5 Mrads (1994??).
I'm hoping someone out there has more recent data.


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