From abstract: Pitchblende, associated with base-metal sulfides, has been found at eight localities in the northern part of Jefferson County, Colo., in shear zones that cut pre-Cambrian metamorphic and igneous rocks, chiefly hornblende gneiss, biotite schist, and granite pegmatite. The pitchblende deposits, with one exception, are in major shear zones that contain vein-like bodies of carbonate-rich breccia. The breccia bodies range from 1 to 5 feet in thickness and are related probably to the Laramide faults, or "breccia reefs" of similar trend, mapped by Lovering and Goddard (1950).

Report issued by the Bureau of Mines over an annual study of synthetic liquid fuel production. Results of the annual study are discussed. This report includes maps, tables, illustrations, and photographs.

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Not that the replubicans cause the thing, James G. Patton, Denver, president of the national Farmers union hastens to add."

Report discussing the use of an air concentrator on uraniferous sandstones for producing concentrates with over ten times the amount of uranium as original sandstone. A description of the concentrator, information regarding its operation, results of the concentration, information on the concentrator's applications, and a general summary are included.

From Introduction: "In the Uravan and Gateway districts, the general character of the bedding in the ore-bearing sandstone and amount of alteration in associated mudstones, and the relation of these to each other, are the features most useful as large-scale guides. This report describes these features and their distribution, as well as some other significant geologic characteristics of the ore-bearing sandstone."

From abstract: Experimental simulation of Colorado Plateau type uranium deposits is divided into seven parts. The first three summarize the essential features of geological occurrence for the ores. The last four parts outline the results of experimental investigation arranged according to each geological group of features influencing mode of occurrence.

Letter from Harris L. Kempner to George Berger enclosing a letter about his and Ruth's stay at the Brown Palace and discussing their recent visit with George and Lornie and a meeting with Lo, the poor Indian.

Letter from Toni Antony to Harris L. Kempner thanking him for his note regarding his visit to the Brown Palace.

Letter from Harris L. Kempner to Toni Antony expressing pleasure at the positive reception and friendless of the staff at the Brown Palace.

Letter from Harris L. Kempner to Hugh K. Jones regarding a hors d'oeuvres server sent to the Kempners and sending best wishes for the new year.

Letter from Harris L. Kempner to W. R. Eaton offering a late reply to a Christmas note and offering general updates on his travel plans.