Relative pressure changes in coal pillars during extraction :a progress report

Author: Curth, Ernest A.
Year: 1967
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:6980
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 6980
Subjects: Coal mines and mining
Mining engineering
Link: https://hdl.handle.net/2027/mdp.39015078532119

< New search