United States Department of Energy Grand Junction Office Report PGJ/F-015(82)

Abstract

From Purpose and Scope: "The Billings Quadrangle (2º), Montana and Wyoming, was evaluated to identify geologic units and to delineate areas that exhibit characteristics favorable for uranium deposits that could contain at least 100 tons U3O8 in rocks with an average grade of not less than 100 ppm U3O8. Surface and subsurface data were used to evaluate all geologic environments to a depth of 1500 m (5,000 ft).