The Carlsbad and New York laboratories and schools will be closed on Monday, May 28 in observance of the Memorial Day holiday. These locations will resume regular business hours on Tuesday, May 29.
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Nathan D. Renfro
November 7, 2016
Determines whether blue zircon, inadvertently altered to brown by exposure to long-wave UV radiation, can be restored to its original color through the use of incandescent light.