Report discussing the U.S. Geological Survey's investigation of radioactive trace elements along the highways in Tanana and upper Copper River valleys.

The following interim report provides information on the radioactivity discovered in the Chattanooga shale that consist of a basal sandstone, a lower black shale, a middle gray shale, and an upper black shale.

Abstract: The Control Chart statistical methods, developed by Showhart for the control of quality of manufactured products, are applied to the control of Geiger-Miller counting instruments. Experiments are reported to show the use to the Control Chart method for detecting disturbances in instrumental behavior and for detecting radioactive effects so weak that they are near the limit of detection of the instruments. As a corollary, the control chart can be used to reduce to its practical limit the time required for tests.

Report discussing the U.S. Geological Survey's investigation of possible radioactive material sources in placer-mining areas and bedrock exposures near Teller, Alaska. This investigation was done during June and July of 1946.

A generalized geologic map shows the locations of the uranium mines and some of the many occurrences and prospects in the Gas Hills district. Included also are recently-mapped structural features and results of analyses of uranium in water.