 美国迄今已从申报的高浓铀中稀释了总量超过 146 公吨的高浓铀，这些材料足以用作 5 800 余件核武器的材料。随着目前稀释更多材料的工作取得了进展，稀释高浓铀的总量将继续增加。稀释后该材料不会被进一步用作核弹头的裂变材料。
 To date, the United States has down-blended a total of more than 146 metric tons of HEU from these declarations — enough material for more than 5,800 nuclear weapons. The total amount of down-blended HEU will continue to increase as the current down-blending effort for additional material progresses. Down-blending removes this material from further use as fissile material in nuclear warheads.