Michael Cartwright
Arthur Desborough
United States. Congress. Senate. Committee on Agriculture and Forestry
Jean-Pascal Serbera
Gilbert de Terssac
Daniel Dissy
Arthur Pine Van Gelder
I. Swift
Washington (State). Powder Investigating Committee.
Gustav Martin
Steve Camp
Jean Quinchon
United States. Agency for Toxic Substances and Disease Registry
Germany
Hercules Powder Company
G. J. Jeacocke
Michael W. Dombrowski
Tomáš Dérer
Paul Amyotte
Daniel Depris