IN THE MID­DLE OF A CHAIN RE­AC­TION

History Revealed - - TIME CAPSULE DECEMBER -

Chicago Pile-1 was con­structed in se­crecy in a squash court be­low an aban­doned foot­ball field. In the freez­ing win­ter tem­per­a­tures, work­ers and sci­en­tists built the pile by stack­ing lay­ers of graphite bricks on top of a crude wood fram­ing.

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