Dust produced by drilling when water is sprayed on the outside of the drill steel

Author: Johnson, John A.
Additional Authors: Agnew, Wing G.
Year: 1939
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:3478
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 3478
Subject: Coal mines and mining--Dust control
Link: https://hdl.handle.net/2027/mdp.39015078496620

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