Relation between and precision of dust counts (light- and dark-field) from simultaneous impinger, midget-impinger, electric-precipitator, and filter-paper samples

Author:	Brown, Carlton E.
Additional Authors:	Schrenk, H. H.
Year:	1949
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:4568
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	4568
Subjects:	Particle size determination
	Dust control
	Industrial hygiene
	Dust--Measurement
Link:	https://hdl.handle.net/2027/mdp.39015078486449