http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?expand%3Dsubject;f1-subject%3DEvents%20(Historical);f2-subject%3DAtomic%20pile Results for your query: expand=subject;f1-subject=Events (Historical);f2-subject=Atomic pile Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/AtomicPileLayer_apf2-00502r/AtomicPileLayer_apf2-00502r.dc.xml Photograph taken November 1942 during construction of the first nuclear reactor as the 19th layer of graphite was added. Layer 18, almost covered in the picture, contained uranium; alternate layers of graphite containing uranium metal and uranium oxide were spaced by layers of dead graphite. Construction was carried on in this manner to the 57th layer, which was one layer beyond critical or operating dimensions. The roughly spherical form of the structure is shown as is some of the supporting framework. The reactor was constructed under a section of the West Stands of the University of Chicago's Stagg Field, and was operated for the first time December 2, 1942. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/AtomicPileLayer_apf2-00502r/AtomicPileLayer_apf2-00502r.dc.xml Sun, 01 Nov 1942 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/AtomicPileSketch_apf2-00501r/AtomicPileSketch_apf2-00501r.dc.xml On December 2, 1942 using a nuclear reactor erected under a section of the West Stands of the University of Chicago's Stagg Field, a group of scientists achieved the first self-sustaining chain reaction and thereby initiated a controlled release of nuclear energy. The reactor consisted of uranium and uranium oxide lumps spaced in a cubic lattice embedded in graphite. In 1943, the reactor was dismantled and reassembled at the Argonne National Laboratory. Photographic copy of drawing. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/AtomicPileSketch_apf2-00501r/AtomicPileSketch_apf2-00501r.dc.xml Thu, 01 Jan 1970 12:00:00 GMT