Ventilation in metal mines
Subtitle: a preliminary report
Series: U. S. Department of Interior. Bureau of Mines. Technical Paper -- 251
Publisher: Government Printing Office.
Published: 1921
Place of publication: Washington
Language: eng
Number of pages: 44
Subjects: Mine ventilation
Description: Shows the advantage of good ventilation and treats of related metal mining subjects dealing with the health and efficiency of miners.
Notes: Includes bibliographical references.