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http://groups.msn.com/AlanBoylesCosmicLog/general.msnw?action=get_message&mview=1&ID_Message=892Self-appointed radiation sleuth Walter L. Wagner wrote in with an update on a May story about “ticking tiles” — vintage ceramic tiles with a glaze that contains uranium:
Name: Walter L. Wagner
Just a quick update to let you know about the Health Physics Society conference in San Diego.
My poster presentation was generally well-received. I spoke with about 50 participants during a two-hour time period. All of them were aware of Fiestaware-type usage of uranium glazing. Only two were aware of uranium glazing on floor and bathroom tiles, and the others were somewhat surprised to learn of its extensive usage.
They all seemed to agree that it points up the fact that the nuclear industry (with some 100,000 tons of depleted uranium waste product sitting around at the enrichment plant in Kentucky) does nothing of the magnitude of what was done before the nuclear industry came into existence (1941), compared to what the tiling/ceramics/uranium-glazing industry did, and which is still in place.
Also, I found several buildings in San Diego with uranium tiles, including one that had extensive usage of yellow bathroom tiles on the exterior (though not in that situation causing any undue risk), pointing up again that many of the houses in that area would have those tiles in the interior bathrooms and kitchens.
http://www.nrc.gov/reading-rm/doc-collections/cfr/part040/part040-0013.html.... manufactured glass brick, pane glass, ceramic tile, or other glass or ceramic used in construction;
(iv) Glass enamel or glass enamel frit containing not more than 10 percent by weight source material imported or ordered for importation into the United States, or initially distributed by manufacturers in the United States, before July 25, 1983.1
(3) Photographic film, negatives, and prints containing uranium or thorium; ....
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