Protection factors of the airstream helmet /

Bibliographic Details
Corporate Author:	United States. Bureau of Mines
Other Authors:	Cecala, Andrew B.
Format:	Government Document Book
Language:	English
Published:	[Washington, D.C.?] : U.S. Dept. of the Interior, Bureau of Mines, [1981]
Series:	Report of investigations (United States. Bureau of Mines) ; 8591.
Subjects:	Mine safety > Equipment and supplies. Mine dusts. Helmets.

Description
Physical Description:	17 pages : illustrations ; 27 cm.
Bibliography:	Includes bibliographical references.