Sampling mine atmospheres for potential alpha energy due to the presence of radon-220 (thoron) daughters /

Bibliographic Details
Main Author:	Rock, Robert L.
Corporate Author:	United States. Mining Enforcement and Safety Administration
Format:	Government Document Book
Language:	English
Published:	[Washington] : Mining Enforcement and Safety Administration, [1975]
Series:	Informational report (United States. Mining Enforcement and Safety Administration) ; 1015.
Subjects:	Thoron > Decay. Mine gases > Safety measures. Alpha rays.

Description
Physical Description:	15 pages : illustrations, tables ; 27 cm.
Bibliography:	Includes bibliographical references (page 15).