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  • Description: periscope
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    • Reading the scale

    • Tetraethyl lead
    • The scale on the floor below at the DuPont Company´┐Żs tetraethyl lead plant is being read from the catwalk by means of a periscope. The scale shows the weight of the material going into the manufacture of tetraethyl lead, an antiknock compound...
    • Atomic Energy

    •  
    • Close up of south face of Brookhaven Reactor-Through these holes in the south face of the Brookhaven reactor are introduced tons of pure uranium metal. Once in the graphite moderator of the reactor proper, uranium atoms fission, or spilt, in a...

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