Circular produced by the U.S. Bureau of Mines to promote safety through a series of reports on accident prevention in mines. According the the scope statement, "This is the fourth section of the revised series of circulars that cover various phases of accident prevention in metal and nonmetallic mines; it give information on accidents and injuries from storing, handling, and using explosive in metal and nonmetallic mines and discusses the precautions by which they can be prevented" (p. 2).

Report including seven miners' circulars on accident prevention in metal and nonmetallic mines. The explain the cause of mine fires and methods used to prevent and control them, the occurrence of gases in mines, and the importance of standards in ventilation.