Drilling and sampling with a wagon drill

Author: Soul©Øe, J. H.
Year: 1947
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:3984
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 3984
Subject: Boring machinery
Link: https://hdl.handle.net/2027/mdp.39015078503797

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