Franz Schwedler
David Reay
W. V. Graves
Milton M. Sherman
Ivan H. Griffin
J. F. Kiefner
Paul R. Smith
Bennie Herrington
John J. McKetta
Thomas W. Frankland
Gregory Miller
C. E. G. Bland
Unknown Author
Alejandro Vivanco G.
American Society of Mechanical Engineers
Mohinder L. Nayyar
Louis Gary Lamit
Copper Development Association.