Report issued by the U.S. Bureau of Mines discussing the development of Turkey's mineral industry. Mineral production, consumption, and trade are presented. This report includes tables, maps, illustrations, and photographs.

Report issued by the U.S. Bureau of Mines discussing the lode-tin mining operations of Seward Peninsula, Alaska. History, geology, production, and mining methods are presented. This report includes tables, maps, illustrations, and photographs.

Report issued by the Bureau of Mines over studies conducted on geophysical surveys for exploratory drilling. Electrical-resistivity techniques are discussed. This report includes tables, maps, and illustrations.

Supplementary report from the U.S. Bureau of Mines regarding the results of a survey of the natural gas (helium) resources available in the United States. From the summary: "Certain source data and results of analysis pertinent to 1,575 gas samples, which have been obtained from 26 States, Alaska, and Canada (only a few from the latter 2 regions) and analyzed in connection with the helium-survey program of the Bureau of Mines, are presented in tabular form. This publication is supplementary to Bulletin 486 of the Bureau of Mines. Samples analyzed from late 1947 to around May 1956 are included in this bulletin and augment the samples reported in Bulletin 486" (p. 1).