Our Pick
Posted on @rawstates
B Reactor goes critical
1944
Hanford Site, Washington
Public domain · Wikimedia Commons
The first full-scale plutonium reactor in the world, built in thirteen months on land cleared of two towns and Wanapum fishing grounds. Its plutonium was used at Trinity and over Nagasaki. Most of the 50,000 workers had no idea what they were making.
That was 1 of the hidden places.
Location: documented spot
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