I am wondering about the proper disposal of spent thoria and yttria
source filaments in the U.S.  Does anyone have any  info?

Thank you, Margaret

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Margaret B. Lansing
National Oceanic and Atmospheric Administration
U.S. Department of Commerce
Great Lakes Environmental Research Lab
2205 Commonwealth Blvd.
Ann Arbor, MI 48105
734-741-2210 (office)
734-741-2289 (lab)
734-741-2055 (fax)
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