These Radiation Protection posters were produced at Oak Ridge National Laboratory in the late 1940s, where the most of the work was done on the Manhattan Project. Before the Cold War was in full effect, these posters warned of dangers that would come to define a generation.

Health Physics Surveyors are trained and equipped to help you avoid radiation exposure

Early Nuclear Safety Posters Are Perky and Disturbing

Radiation need not be feared – but it must command your respect

Early Nuclear Safety Posters Are Perky and Disturbing

Immediate Care for Contaminated Wounds

Early Nuclear Safety Posters Are Perky and Disturbing

For your protection

Early Nuclear Safety Posters Are Perky and Disturbing

Wear protective clothing when contamination is possible

Early Nuclear Safety Posters Are Perky and Disturbing

Forgotten meters measure no radiation

Early Nuclear Safety Posters Are Perky and Disturbing

A hand count in time… saves nine!

Early Nuclear Safety Posters Are Perky and Disturbing

You MAY Get A Harmful Dose IF You Do Not Follow Safe Methods — a poster from the Y-12 National Security Complex

Early Nuclear Safety Posters Are Perky and Disturbing

(via Y12)

The images are from Oak Ridge Health Physics Historical Instrumentation Museum Collection, except when noted otherwise.