| Radiation Warning Sign - Pre-Trefoil (ca. 1945, 1946) | |
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| This radiation warning symbol
pre-dates the current three-bladed radiation warning symbol
- it was used at Oak
Ridge National Laboratory for a short time after WW II. Other symbols, such as a
skull and cross bones, were used elsewhere. For more details about the history of
the radiation warning sign, click here, otherwise
continue to view more images.
Donated by George Warlick |
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Last updated: 07/25/07 |
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