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August 2, 1939 ......... Albert Einstein and Leo Szilard wrote a letter to Pres. Roosevelt urging the government to expand research in the area of nuclear chain reactions which conceivably could lead to the development of an all powerful (atomic) bomb. They noted that Germany had already taken some initial steps along these lines.
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1) What was the name of the subsequent massive secret operation to develop the atomic bomb ?
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2) These two individuals held the initial patent for a nuclear reactor and later sold it to the U.S. government -- ____?____ and ____?____ .
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3) The atom bomb material was developed at two principal sites -- ____?____ and ____?____ .
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4) In 1945 Szilard circulated a petition among fellow nuclear scientists asking Pres. Truman to : ______ ?_______ .
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5) The material used for the first atomic bomb - Hiroshima - was _____ ? _______ .
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Super duper bonus question) The explosive blast over Hiroshima was equivalent to roughly ______ ? _______ thousand tons of TNT.