Conveyor Equipment Manufacturers Association. Screw Conveyor Engineering Committee.
Michael P. Forcade
Conveyor Equipment Manufacturers Association. Engineering Conference.
M. E. Fayed
American Chain Association Editors
D. V. Subba Rao
South Africa. Board of Trade and Industries.
Conveyor Equipment Manufacturers Association. Engineering Conference
Bernhard Sann
I. Sh Beĭlin
Cselényi, József.
Friedrich Johann Carl Rademacher
A. O. Spivakovskiĭ
V. N. Poturaev
F. A. Makhlis
Spivakovskiĭ, A. O.
L. G. Shakhmeĭster
Irk Ėĭzerovich Gruzdev
Schmidt & Gallatin