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矿床规模频率法（ＤＳＦ）是“国家铀矿资源评价（ＮＵＲＥ）”项目中用于估算美国铀矿资源量方法的进一步归纳和总结。ＤＳＦ解决了ＮＵＲＥ项目中进行下述主观概率估算的难题：（１）有利于铀矿床产出的成矿有利区占研究区的比例（因子Ｆ）；（２）成矿有利区中单位面积岩石吨数（因子Ｔ）。由于几乎所有地质学家对因子Ｆ和Ｔ的量度都不熟悉，大多数工作者只能估算出成矿有利区可能产出的铀矿床的数目及它们的平均规模。ＤＳＦ把因子Ｆ和因子Ｔ合并为成矿有利区内待发现铀矿的单位面积岩石吨数因子（Ｆ＊Ｔ）。这样，地质学家所提供的因子Ｆ·Ｔ就是特定矿床规模分类中单位面积内待发现矿床的估算数目。矿床规模分类的数目及每类规模间距是以已知（控制）区内的矿床资料为基础的。与ＮＵＲＥ法相比，ＤＳＦ法在主观估算中涉及范围更广，并且更多地突出了勘探工作者的日常经验。利用ＤＳＦ法对华盛顿州和爱达荷州的时代新、富含有机质的在生铀矿及亚利桑那州的大峡谷和附近犹他们等地区的溶蚀滑塌角砾岩筒型铀矿进行了重新评价。
The deposit size frequency method (DSF) is a further summary and summary of the methods used to estimate uranium resources in the United States for the National NURS project. The DSF solves the following Nure project challenges for estimating subjective probabilities: (1) the ratio of favorable metallogenic areas favorable for uranium deposit production to the studied area (factor F); (2) Tonnage (factor T). Since almost all geologists are unfamiliar with the measures of F and T, most workers can only estimate the number of uranium deposits that are likely to be produced in favorable metallogenic areas and their average size. The DSF combines the factor F and the factor T into the rock tonnage factor (F * T) per unit area of the uranium to be discovered in the metallogenic favorable area. Thus, the factor F · T provided by the geologist is the estimated number of deposits to be found per unit area in a particular deposit size classification. The size of the deposit and the size of each type of deposit are based on the deposit data in the known (controlled) area. Compared with the NURE method, the DSF method involves a wider range of subjective estimates, and more emphasis on the daily experience of the exploration workers. DSF was used to re-evaluate the erasure-brecciated breccia tubular uranium deposits in Washington State and Idaho at the age of new organic-rich uranium deposits, the Grand Canyon in Arizona and nearby Utah, and other regions .