Some small coal jigs for mechanical cleaning of coal at truck mines and other low-tonnage operations

Author: Gandrud, B. W.
Additional Authors: Bator, G. T.
Year: 1943
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:3718
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 3718
Subject: Coal washing--Alabama
Link: https://hdl.handle.net/2027/mdp.39015078487629

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