Word: beryllium
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Dates: during 1990-1999
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...metals, especially those mined or produced by MINATOM. These include internationally restricted materials like boron 10, which is used in reactor control rods, and osmium 187, a nonradioactive isotope that can sell for more than $100,000 a gram. International trade in other, less exotic materials, such as zirconium, beryllium and hafnium, is controlled by nuclear nonproliferation agreements...