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fiesta and uranium glass leaching.

updated sat 17 jan 04


Edouard Bastarache Inc. on thu 15 jan 04

Lee and all,

read Smart.Conseil's excellent historical/technological report
on the use of uranium in glazes:


"Ils sont fous ces quebecois"
Edouard Bastarache
Irreductible Quebecois
Indomitable Quebeker

Steve Slatin on fri 16 jan 04

Edouard --

A great citation and with your translation, I can understand it. We don't
always appreciate the effort that goes into this sort of thing, so ...

-- Steve S

-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Edouard
Bastarache Inc.
Sent: Thursday, January 15, 2004 6:36 PM
Subject: Re: Fiesta and Uranium Glass Leaching.

Lee and all,

read Smart.Conseil's excellent historical/technological report
on the use of uranium in glazes:

Lee Love on fri 16 jan 04

I found this on the web:

Just reorganizing my office when I came across an interesting article in
the September 1992 HP Journal about the leaching of *uranium* from glass
and ceramic. As a synopsis, there is BOTH *uranium*-containing glassware
and ceramic glazes. During the early 20th century, *uranium* salts were
produced as by-products of the radium extraction industry. Yellow sodium
uranate was used in quantities of up to 25 weight percent to produce a
yellow-green glass. As the atomic bomb era moved foreward, the U.S. War
Production Board largely prohibited the use of *uranium* for
non-military use. When restrictions were lifted in 1959, the use of
*uranium* salts began again, largely for dinnerware, with a red-orange
glaze. The production of the major variety (*Fiesta*) of *uranium*
glazed tableware ended in 1972. As far as leaching goes, the
*uranium*-containing glass, under test conditions using 24 hour
exposures with (1) deionized water and (2) 4% acetic acid
solution(similar to household vinegar) represented most typical
household uses. The *uranium*-containing glassware had minimal *uranium*
leaching. The *Fiesta*, however, displayed relatively low 3.9-10.6
ug/liter *uranium* leachate with the water, but values of 470-31,800
ug/liter when tested with the acetic acid solution. With the amount of
normal use of this dinnerware, I wouldn't recommend using acidic foods
with the *Fiesta* but I wouldn't be overly concerned with health hazards
arising from it. Again, interesting article.

Keith Varnado, CHP

Lee in Mashiko

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