Word: enriching
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Dates: during 2000-2009
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Whether you want nuclear power or a nuclear bomb, you start off with the same basic material: uranium. In both civilian and military nuclear programs, mined uranium is converted into a gas and then enriched in centrifuges to increase the proportion of U-235--the uranium atoms that start and continue a nuclear chain reaction. Uranium that feeds a power plant needs only 3% enrichment, but a nuclear warhead requires at least 90% enrichment, and more centrifuges. The difference is so significant that international inspectors would probably detect the enrichment change unless Iran chose to enrich its uranium covertly, slowing...
...prepared to say with a "moderate" degree of certainty that Iran had stopped its nuclear-weapons program, but the information wasn't very conclusive. That finding would have put the U.S. in the same camp as the International Atomic Energy Agency (IAEA) - deeply concerned about the Iranian efforts to enrich uranium but skeptical about the regime's efforts to fashion that uranium into a bomb...
...employs 325 lecturers and preceptors throughout its departments. Employing faculty with short-term contracts allows universities to more easily change teachers and the courses offered to meet their needs, Casey said. “Most of our non-tenured positions are brought in to support upper faculty and to enrich and deepen course offerings,” he said. Curtis said the expansion of contingent faculty was a source of concern. Non-tenure-track faculty, including graduate students, often don’t have as much time to devote to students. And their students can have difficulty finding mentors...
...telephone call in which an Iranian general expresses exasperation at questions about a program that he says stopped years before.) But while asserting that Iran may no longer have a weapons program, the new report also stresses that Iran is continuing to try to develop the technique to enrich uranium on a massive scale and that it could, theoretically, manufacture enough highly enriched uranium, or HEU, to build a bomb "during the 2010-15 time frame." (Iran says it is enriching uranium for peaceful purposes to use in energy production and does not intend to make...
...Bush's warning makes clear that the red line, for his Administration, is not an Iranian bomb program per se, but rather Iran's attaining "the knowledge necessary to make" such a weapon - by which he means mastering the technology of uranium enrichment. Enriched uranium is a key component (although hardly sufficient, by itself) for a nuclear weapon. But enriching uranium, to a far lower degree, is also an integral part of any civilian nuclear energy program - and, it's entirely legal for any signatory of the Non-Proliferation Treaty (NPT) in good standing to enrich uranium under IAEA monitoring...