U. Gayon
British Sulphur Corporation, ltd.
Richard Herman Wilhelm
Howard William Post
United States. Bureau of Manufactures.
Green, Horace
American Institute of Chemical Engineers. Air and Ammonia Plant Safety Committee. Ammonium Nitrate Operating Practices Subcommittee.
Charles O. Flagg
Warren Walter Ewing
Karl Clauss
Lambertus Casper Everhard Kniphorst
Lester W. Strauss
David Rhodes Ellis
United States. Bureau of Foreign and Domestic Commerce
Unknown Author
Alexander Christoff
Allegra Ward
Hall Overton
Herbert A. Smith
Albert Stutzer