1. Copper concentrator practice at Ok Tedi Mining Limited, Papua New Guinea;England,1993
2. Increasing fine copper recovery from the porphyry sulphide ores of Ok Tedi Mining Limited, Papua New Guinea;Orwe,1997
3. Chalcocite oxidation and its influence on fine copper recovery at the Ok Tedi concentrator, Papua New Guinea;Orwe,1997
4. XPS study of the oxidation of cuprous sulphide in aerated aqueous solutions;Mielczarski;Coll. Surf.,1988
5. Electro-chemical flotation of sulfides: reactions of chalcocite in aqueous solution;Walker;Int. J. Miner. Process.,1984