Backstrom Holger G.
Basford John
Berlaimont Claude
Bourbon Raymond
Centre Technique Industriel dit "Centre Technique des Industries
Champion Raymond
Corbet John S.
Godijn Willem
Hemming James R.
Kent Svensson
Kumazawa Katsuyoshi
Poulton & Son (Refractories) Limited
Research Instituut "Sesto" B.V.
Sakamoto Moriyoshi
Svensson Kent
Thermic Investment