Report discussing open-cut mining at the metal mines of the United States. It is an applicable method to flat-lying mineral deposits relatively near the surface.

Summary of the Attwater's prairie chicken, including differences versus other prairie chickens, habits, habitat, limiting factors, management, and threat of extinction due to exploitation by man.

Report issued by the U.S. Bureau of Mines on the development and engineering of petroleum fields in Chambers County, Texas. Analyses are presented. Report includes tables, graphs, maps, illustrations, and photographs.

Report issued by the U.S. Bureau of Mines on the annual study of the work done by the Mining Division. Investigations, operations, and projects completed during the fiscal year are discussed. This report includes tables, and photographs.

Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1940, activities, organizational leadership, and other information about scouting programs.

From Purpose of Report: "This paper is based partly upon the authors' observations and partly upon studies of tunnel driving; these cover essentially all types of tunnels in various parts of the United States during the past 25 years."

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 of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.