Nystrom Lars E. V.
Oftedal Tor Audun
Ogata Kan
Ohayon Gerard
Ohura Koji
Omori Sido
Onahama Smelting And Refining Co. Ltd.
Orjala Markku
Pappinen Matti
Paul A. Ketchpel
Penner Albert
Penner Cornelius
Pennsylvania Bituminous Coal Research
Perno Pehr Vihelm
Peter Edward Van Saun
Peter Edward Van Saun
Petersen Jorgen H.
Peyton William C.
Pickard Frank C.
Plavnik Zinovy