Method and cost of mining the Pittsburgh, or no. 8, coal bed in four eastern Ohio mines

Author: Paul, J. W.
Additional Authors: Tomlinson, H.
Year: 1929
Document Type: MAIN
Issuing Agency: U.S. Dept. of Commerce, Bureau of Mines,
SUDOC: C 22.11:6208
Series: Information circular / Bureau of Mines ;
Report Number: 6208
Subject: Coal mines and mining--Ohio
Link: https://hdl.handle.net/2027/mdp.39015095082395

< New search