Arthur F. Taggart
Ram Pravesh Bhagat
Algernon Del Mar
Moritz Ferdinand Gaetzschmann
Samuel John Truscott
Josef Finkey
American Cyanamid Company
Pierre Blazy
S. K. Jain
Edmund James Pryor
V. R. Miller
S. Komar Kawatra
Julius B. Rubinstein
United Nations. Economic Commission for Europe.
L. A. Glazunov
International Mineral Processing Congress (7th 1964 New York)
International Mineral Processing Congress (13th 1979 Warsaw)
International Mineral Dressing Congress (1957 Stockholm)
International Mineral Processing Congress (20th 1997 Aachen, Germany)