The Manhattan Project Heritage Preservation Association, Inc.

"Preserving, Exhibiting, Interpreting and Teaching the History of the Manhattan Project"


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Little Known Factlets

The first shipment of plutonium from 224-T,Lanthanam Fluoride crossover step, to the isolation building, 231-W was a thick black tar like substance. Nothing like what they were expecting. It turned out it was a high iron content that produced this plutonium tar. Reported by George Watt from inside the T-Plant "canyon" building in 1968 the 25th anniversary of the Hanford Site

Don Sorenson - Washington State

 


The Manhattan Project is comprised of several little known facts and factoids.  Some are long and some are short...but, all are interesting.

We have listed below some of the more interesting facts that we have run across.  We will be adding many more as time permits.

Note: If you happen to be aware of a little know fact relating to the Manhattan Project, please go to the bottom of this page and submit it to us.  We will include it here on this page and in our newsletters.  Let us know if you would like us to use your name as the source.


 

  • The first shipment of plutonium from 224-T,Lanthanam Fluoride crossover step, to the isolation building, 231-W was a thick black tar like substance. Nothing like what they were expecting. It turned out it was a high iron content that produced this plutonium tar. Reported by George Watt from inside the T-Plant "canyon" building in 1968 the 25th anniversary of the Hanford Site

    Don Sorenson - Washington State


  • During World War II it was rumored that the Army Air Force had been seen dropping pumpkins instead of bombs.  Actually, this rumor originated from someone who had learned or heard sensitive information from someone with the 509th Composite Group.  During practice bombing missions, the 509th Composite Group dropped "test" bombs of approximate size and weight of the "Fat Man" bomb.  These test bombs were mustard colored and were referred to as "pumpkins".

  • The material called "Teflon" was developed by DuPont due to corrosion provoked by uranium hexafluoride.

  • "Born Inside Box 1663" - Box 1663, Santa Fe, NM was the "blind" address used for all correspondence to and from Los Alamos.  The actual name Los Alamos was prohibited from showing up on any letters or parcels - coming or going!  The address shown on the birth certificates of the children born at the Los Alamos Engineers Hospital during the war years indicated a simple "Box 1663".

  • More than 140,000 civilians, all passing rigorous background checks, worked at various locations on the Manhattan Project.  No formal record exists of their participation, let alone what they did.  You can make a difference.  If you know of someone who did participate, either civilian or military, please contact us via "feedback" above!

  • Some weeks after Germany had surrendered, a German U-boat (#U-234) pulled into the Portsmouth Naval Shipyard in Virginia.  The crew promptly surrendered themselves and their cargo - 10 cases of uranium ore being transported to Japan (more)

  • Los Alamos, NM is high on a mesa on the eastern slopes of the Jemez Mountain Range (part of the Rocky Mountain System); it's elevation ranges from 7,200 feet to more than 9,000 feet above seal level.

  • When in New York, make it a point to see Michael Frayn's intriguing play, "Copenhagen".  This is a drama about a 1941 meeting in Copenhagen, Denmark during World War II, when the world renowned physicist Werner Heisenberg pays a visit to his mentor, Niels Bohr, and his wife, Margrethe, to discuss the possibilities of nuclear fission.  The Dane, Bohr, was living under Nazi occupation but soon would escape to lend his immense expertise to the Allied cause.  The German, Heisenberg, his former pupil, came either to warn him or to try to win him over to the Nazi cause.  We'll probably never know.

  • A constant worry amongst the upper echelons of the Manhattan Project  was how far along the Germans were in developing their own atomic weapon.  During the early years of the war, very little useful information was obtained by "spies" working behind enemy lines.  However, in 1944, General Groves launched the "ALSOS Project" which was designed to capture Hitler's atomic scientists, scientific records, and uranium stockpiles as the Allied Armies began their thrust into Europe.

  • During the peak years of its operation, the Clinton Engineer Works (later known as Oak Ridge) consumed 1/7 of the total electrical output of the United States.

Please state your "Little Known Fact" in the space below.  Take as much space as you need.

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