Epstein Files Search

EFTA00630381Set 9

2012-03-1323p7,513w

neutrons.) One isotope is U- 238 with 146 neutrons, and the other is U-235 with 143 neutrons. Nuclear reactions, including inside both power plants and bombs, require U-235 ... However, natural uranium is only 0.7% U-235. (That is, there are merely 7 atoms of U-235 for every 993 atoms of the less useful U-238.) A nuclear ... power plant needs uranium to be purified to 3-4% U-235, while a nuclear bomb needs 90% U-235! To put that into perspective: In order to obtain enough

https://www.justice.gov/epstein/files/DataSet%209/EFTA00630381.pdf

EFTA01907794Set 10

2013-01-2843p10,621w

puzzles us laymen, but not nuclear physicists: It takes much more work to enrich U-235 from its 0.7% concentration in natural uranium to reactor-grade levels ... levels to weapons-grade (90%+). Enrichment is simply the physical process of separating fissile U-235 isotopes from the unnecessary U-238 isotopes. Enriching 0.7% natural U-235 ... required to reach 90%+. How can this be? To get from 0.7% to 4% U-235 concentration EFTA_R1_00341998 EFTA01907814 requires removing considerably more U-238 than doing

https://www.justice.gov/epstein/files/DataSet%2010/EFTA01907794.pdf

EFTA00850809Set 9

2015-07-1948p19,595w

starts with uranium ore. Uranium mined from the earth is less than 1 percent U-235, the isotope that can be used to fuel reactors and make bombs. Centrifuges ... needed to separate the U-235 from the rest of the uranium, in a process called enrichment. The other fuel that can be used to make a bomb, plutonium ... Uranium Path During the enrichment process, centrifuges are used to raise concentrations of U-235. For most power reactors in the West, uranium is enriched up to 5 percent. Bomb

https://www.justice.gov/epstein/files/DataSet%209/EFTA00850809.pdf

EFTA01779249Set 10

2011-03-186p2,512w

control rods. But over time= U-238 accumulates neutrons produced from the fission of U-235, eventually=becoming neptunium and then plutonium. Why does this matter? When this happens, rods

https://www.justice.gov/epstein/files/DataSet%2010/EFTA01779249.pdf

EFTA02384038Set 11

2013-10-2123p5,000w

would need the technical capacity to produce a critic.' mass of the uranium isotope U-235 (about 25 kg of uranium enriched to 90=) or the plutonium isotope

https://www.justice.gov/epstein/files/DataSet%2011/EFTA02384038.pdf

EFTA01880411Set 10

2012-05-2431p6,967w

confidence-building agreement by which Iran voluntarily ceases enriching to 20% content in the U-235 fissile isotope and blends down or ships out their stockpile of such uranium, which

https://www.justice.gov/epstein/files/DataSet%2010/EFTA01880411.pdf

EFTA00973864Set 9

2013-10-2119p6,503w

would need the technical capacity to produce a critical mass of the uranium isotope U-235 (about 25 kg of uranium enriched to 90%) or the plutonium isotope

https://www.justice.gov/epstein/files/DataSet%209/EFTA00973864.pdf

EFTA01949508Set 10

2013-10-2128p6,547w

would need the technical capacity to produce a critical mass of the uranium isotope U-235 (about 25 kg of uranium enriched to 90%) or the plutonium isotope

https://www.justice.gov/epstein/files/DataSet%2010/EFTA01949508.pdf