From Introduction: "This paper describing the methods of sinking shafts is one of a series of mining practices and costs being prepared by the United States Bureau of Mines. The best methods of performing all phases of shaft sinking are discussed herein, with particular to the practices at metal mines."

Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.

From Introduction Arrangement of Report: "The results of this investigation are presented in two main divisions. The first part covers the chemical and physical tests on average samples of the coals used-chemical analysis, float-and-sink tests to determine distribution of the ash, determination of the forms of sulphur, chemical analyses of the ash, and ash-fusabilibity determinations. The second part covers the clinkering studies and the comparisons of the results with the ash-fusibilty and other tests."

Results of commercial and experimental paints tested on plaster, concrete, and other porous surfaces.

Technical paper issued by the Bureau of Mines over transportation of motor gasoline by pipe line. The locations and designs of the pipe lines are discussed. This paper includes tables, maps, photographs, and illustrations.

Introduction Object and Scope of Paper: "This paper attempts to assemble and discuss briefly in one volume a number of subjects relating to the mining of gold, particularly from lode deposits, in the United States and Canada."

Report issued by the Bureau of Mines over the sampling and analyses of ore deposits. Methods, problems, and results are presented and discussed. This report includes tables, and illustrations.

From Introduction Purpose of Report: "The importance of safety work in connection with the operations of gold dredges assumed such proportions at one time that the State of California deemed it necessary to issue a special bulletin on this subject."

Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1931, activities, finance, honors, organizational leadership, and other information about scouting programs.

From Scope of Report: "This report is in two parts-the major or first part is a discussion of the results obtained from field studies of the factors responsible for the deposition of paraffin and the congealing of oil and of practical methods of combating these problems. The second part of the report deals with the analyses of crude waxes or paraffin obtained from different representatives crude oils."

Outlines of the activities and accomplishments of the national and international standardization agencies.

This is a report on the physiography and glacial geology of eastern Montana and adjacent areas.