Radiation Warning Signs

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For a story about the origin of the radiation warning sign (trefoil), click the Info Button 

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Sign from ORNL

 First Use Of Trefoil from Berkeley Radiation Lab

 Trefoil from Berkeley Radiation Lab

 Prototype of Trefoil on Yellow Background

First Production Run of Trefoil on Yellow Background

Variant of Trefoil Warning Sign

Special Warning Sign for Radium

Variant of Trefoil Warning Sign

Variant of Trefoil Warning Sign

Variant of Trefoil Warning Sign

Special Hazards Radiation Warning Sign

Radiation Warning Stickers

Radiation Warning Decals

If you have any corrections that you would like to make to the information presented here, the grammar, spelling, or anything else, please contact Paul Frame at Paul.Frame@orau.org

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