CA40329A
(en )
1892-09-14
Process for the extraction of metals from ores and minerals
CA43692A
(en )
1893-07-20
Method of extracting metals from ores and other compounds
GB189515656A
(en )
1896-06-20
An Improved Process for the Extraction of Precious Metals from their Ores and Compounds.
GB189425016A
(en )
1895-07-06
Process of Extracting Precious Metals from their Ores.
CA42457A
(en )
1893-04-05
Process of and apparatus for extracting metals from ores
CA44771A
(en )
1893-11-25
Method of extracting metals of ores
GB189514402A
(en )
1895-08-31
An Improved Method or Process for the Extraction of Precious Metals from their Ores.
CA49888A
(en )
1895-09-06
Process of extracting precious metals from ores
CA39591A
(en )
1892-08-01
Method of and apparatus for extracting metals from metalliferous materials
GB189418279A
(en )
1895-09-21
An Improved Process for Extracting Precious Metals from their Ores.
GB189408183A
(en )
1895-03-30
Improved Process and Apparatus for Extracting Metals from their Ores.
CA39975A
(en )
1892-08-23
Method of and apparatus for making steel direct from the ore
GB189323619A
(en )
1894-07-07
Improvements in the Method of Separating Metals from Ores and from other Mixtures of Insoluble Substances therewith.
CA78500A
(en )
1902-12-02
Cyanide method of extracting precious metals from ores
GB189511072A
(en )
1895-10-19
Improved Method for Extraction of Precious Metals form their Ores.
CA44805A
(en )
1893-12-01
Process of and apparatus for amalgamating ores
CA46691A
(en )
1894-08-01
Method of extracting of metals from ores
CA39958A
(en )
1892-08-22
Art of and means for recovering and amalgamating metals
GB189408306A
(en )
1895-04-26
An Improved Process for the Extraction of Metals from Oxides and Sulphides.
CA44621A
(en )
1893-11-03
Process of extracting gold and silver from ores and the like
CA43942A
(en )
1893-08-15
Process for extracting gold and silver from ores
GB189408586A
(en )
1894-11-03
Processes of and Convertors for Smelting and Refining Ores.
CA40628A
(en )
1892-10-11
Process of extracting nickel from ores
CA45466A
(en )
1894-03-03
Process and machanism for smelting ores and refining metals
CA39959A
(en )
1892-08-22
Furnace for roasting ores