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Trinity Test, July 16, 1945 - Eyewitness Accounts


On July 16, 1945, when the atomic bomb was tested at Trinity, Los Alamos scientists were the first humans to witness the power of a nuclear weapon.

Even 32 kilometers (20 miles) away, observers felt the heat of the explosion on exposed skin. The radiation level in the rising mushroom cloud was so intense that it emitted a blue glow.

All of these declassified eyewitness accounts were stamped "Secret." Classification-declassification markings are omitted here.

Eyewitness accounts of the Trinity test by:

* Luis W. Alvarez
* Enrico Fermi
* Kenneth Greisen
* Edwin M. McMillan
* Philip Morrison
* Robert Serber
* Maurice M. Shapiro
* Cyril S. Smith
* Victor Weisskopf

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