Nuova Italsider SpA
O'Connor David
O'Dwyer Thomas L.
Obenchain Richard F.
Onahama Smelting and Refining Co., Ltd.
Osaka Hiromi
Osaka Fuji Corporation
Ostergaard Mack R.
Otsuka Hajime
Outokumpa Oyj
Outokumpu Research Oy
Outotec Oyi
Overländer Jörg
Park Min-Chul
Pasierb Slawomir
Paul Wrth S.A.
Peltoniemi Kaarle
Peters G.
Peters George O.
Pierrat Gerard