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Activated rocks

To: radsafe@list.vanderbilt.edu
Subject: Activated rocks
From: Cehn@AOL.COM
Date: Fri, 7 Dec 2001 12:41:40 EST
Reply-To: Cehn@AOL.COM
Sender: owner-radsafe@list.vanderbilt.edu

I am D&Ding activated concrete sheild walls. Part of the floor is above the DCGL and will have to come out. Under the floor is a gravel subfloor. I haven't been able to sample the gravel yet (floor is still in place). Has anyone run into this situation? What nuclides show up in the gravel? Co-60?

Joel I. Cehn, CHP
cehn@aol.com
Oakland, CA
510.268.1571

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