Lymon C. Reese
Unknown Author
Institution of Mining and Metallurgy (Great Britain)
United States. Army. Corps of Engineers.
Inst Of Mining
Hwee Yan Kheng
Manuel G. Bonilla
Shandong kuang ye xue yuan
Shaft Engineering Conference (1989 Harrogate, England)
Jerzy Kicki
Fernando Parra-Velez
J. H. Watson Buck
New Zealand. Dept. of Labour.
Michael W. O'Neill
Lawrence D. Johnson
Walter R. Barker
Karen L. Tucker