ZM1572A1
(en )
1972-10-23
Chlorine leach process
ZA707348B
(en )
1971-07-28
Process for solvent extraction of metals
ZA714582B
(en )
1972-06-28
Extraction of metal values from complex ores
ZM4871A1
(en )
1971-12-22
Process for the leaching and recovery of copper values from copper bearing materials
IE34688B1
(en )
1975-07-23
Process of recovering zinc
ZA735009B
(en )
1974-06-26
Metal extraction process
ZA739078B
(en )
1975-03-26
Leaching of copper ores
ZA71371B
(en )
1972-06-28
Recovery of thio2 from ores thereof
ZA731743B
(en )
1973-12-19
Metal extraction process
ZA733394B
(en )
1974-04-24
Hydrometallurgical recovery of metal values
ZA705306B
(en )
1971-04-28
Process of extracting starting materials which contain metal and sulfidic sulfur
CA925305A
(en )
1973-05-01
Process for leaching lead and silver-bearing residues
ZM19168A1
(en )
1969-11-17
Process of exploitation of residues of leaching zinc-bearing materials
ZM6970A1
(en )
1971-02-22
Process for leaching metal values from mineral-bearing earth material
IL37227A
(en )
1974-06-30
Method of reducingparticulate metals ores
CA873262A
(en )
1971-06-15
Process of exploitation of residues of leaching zinc-bearing materials
AU438866B2
(en )
1970-06-18
Process of exploitation of residues of leaching zinc-bearing materials
PH10240A
(en )
1976-10-08
Metal extraction process
AU4772668A
(en )
1970-06-18
Process of exploitation of residues of leaching zinc-bearing materials
ZA707191B
(en )
1971-09-29
Process for extracting uranium from its ores
ZA71992B
(en )
1971-10-27
Extraction of tin from its ores
ZM13270A1
(en )
1971-08-23
Formed coke making process
ZA706227B
(en )
1971-04-28
Metal extraction process
ZA706594B
(en )
1971-05-27
Improved ore segregation process
ZM3171A1
(en )
1972-07-21
Process of recovering metal values