 2009 年以来，美国与 14 个国家和国际组织就核鉴识技术最佳做法进行了双边关键设备。最值得注意的是，美国、日本和法国对铀定年领域做出了重大贡献，这对核鉴识计量至关重要。美国还与原子能机构就培训和制定核鉴识方法使用指南开展了广泛合作；以及
 Since 2009, the United States has engaged bilaterally with 14 countries and international organizations on technical nuclear forensics best practices. Most notably, the United States, Japan, and France have made significant contributions to the area of uranium age dating, which is a key nuclear forensics measurement. The United States has also cooperated extensively with the IAEA on training and development of implementing guides on nuclear forensics methodologies; and