Wilfried Ließmann
James R. Aggson
Thomas Bryson
Koehler S. Stout
Paul W. Thrush
Clark C. Spence
Tom Bishop
Arlene James
Geoffrey Blainey
G. Köhler
American Institute of Mining, Metallurgical, and Petroleum Engineers.
Jiawei Han
Will Meyerriecks
International Congress on Applied Mineralogy in the Minerals Industry (2nd 1984 Los Angeles, Calif.)
T. N. Michalakopoulos
Don Roderick Hill
Antoni S. Kleczkowski
Unknown Author
Engineering and Mining Journal
Lothar Suhling