Report issued by the U.S. Bureau of Mines discussing materials surveys conducted on mercury. As stated in the foreword, "the surveys dealing with metals and minerals summarize the demand-supply position in the United States and include information on production, imports, consumption, exports, substitutes, and pertinent history" (p. v). This report includes maps, tables, illustrations, and photographs.

Report discussing earthquake activity in the United States during 1943. The report is broken down by regions and has sections for specific earthquakes.

From Introduction: "This publication is a summary of earthquake activity in the United States and the regions under its jurisdiction for the calendar year 1939. A history of the more important shocks of the country appears in Serial 609 of the Bureau, "Earthquake History of the United States: Part I-"Continental United States (Exclusive of California and Western Nevada) and Alaska," and Part II. -"Stronger Earthquakes of California and Western Nevada, Revised (1941) edition."

Report discussing earthquake activity in the United States during 1952. The report is broken down by regions and has sections for specific earthquakes.

Report discussing earthquake activity in the United States during 1941. The report is broken down by regions and has sections for specific earthquakes.

Report discussing earthquake activity in the United States during 1956. The report is broken down by regions and has sections for specific earthquakes.

Report discussing earthquake activity in the United States during 1933. The report is broken down by regions and has sections for specific earthquakes.

Preface: The author of this paper gives a thorough description of a complex of very unusual igneous rocks and associated hydrothermal deposits.