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Re: Refactory Brick; Composition????



For glazed wall tiles, look at the glazing compound.  Uranium is 
commonly used for yellow and green colored glazes.

The preceeding is the personal commentary 
of the author
Ed Tupin
RSO, Center for Devices and Radiological Health
Food and Drug Administration
EAT@cdrh.fda.gov
(301) 827-1230
Fax:  (301) 594-4760