From introduction: The study of the Crystal Mountain district, Larimer County, Colo., is but one phase of this post-World War II pegmatite program, in part carried out by the Geological Survey on behalf of the Division of Raw Materials of the Atomic Energy Commission.

This report describes the stratigraphy of Pleistocene and Recent deposits in the Denver area, Colorado that was conducted intermittently between 1948-52.

The following report presents a preliminary account of the geology and economic aspects of the uranium deposits in the Eureka Gulch area.

A report about minerals fuels and geologies located in parts of the Routt and Moffat counties, Colorado.

This report studies the geology of mineral deposits in Mount Harris, Pilot Knob, Elkhead Creek, and Daton Peek quadrangles in northwestern Colorado.

A report about the Sugar Loaf and St. Kevin mining districts located in Colorado. Most of the bedrock consists of pre-Cambian schist, gneiss, granite, and pegmatite.

The following report was prepared in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund Board. This report concerns work done partly on behalf of the U.S. Atomic Energy Commission and is published with the permission of the Commission.

This report analyzes surficial deposits in the Louisville quadrangle, Colorado, that are divided into three main groups--pre-Wisconsin, Wisconsin, and Recent.

From abstract: Thorium has been found since 1949 in at least 33 deposits in an area 6 miles wide and 20 miles long in the Powderhorn district, Gunnison County, Colo. The district is underlain largely by pre-Jurassic metamorphic and igneous rocks, most of which, if not all, are pre-Cambrian in age. These rocks are overlain by sandstone of the Morrison formation of Jurassic age, and by volcanic rocks of the Alboroto group and the Hinsdale formation of Miocene and of Pliocene(?) age, respectively.