ZA747921B
(en )
1975-12-31
Improvements in and relating to the refining of metals
ZA754138B
(en )
1976-07-28
Improvements in or relating to the processing of metal sulphides
PH10686A
(en )
1977-08-10
B-dikstones and their use as metal extractants
ZA747764B
(en )
1975-12-31
Improvements in and relating to the refining of metals
ZA747461B
(en )
1975-12-31
Improvements in or relatiing to the pouring of metals
ZA751709B
(en )
1976-02-25
Improvements in and relating to the refining of metals
ZA747922B
(en )
1975-12-31
Improvements in and relating to the separation of metals
YU352374A
(en )
1982-02-28
New process for the enrichment of ores and minerals
ZM9075A1
(en )
1976-03-22
Concentration of ore by flotation
ZA743689B
(en )
1975-06-25
Improvements in and relating to detectors for flaws in metal
ZA73533B
(en )
1973-10-31
Concentration of nickel values in oxidized ores
ZM1770A1
(en )
1971-11-22
Flotation of sulfide ores
ZA741704B
(en )
1975-02-26
Improvements in or relating to the treatment of minerals
ZA74917B
(en )
1975-01-29
Improvements in and relating to conveyors
ZA761052B
(en )
1977-02-23
Improvements in or relating to metals
ZA748B
(en )
1975-08-27
Improvements in or relating to conveyors
ZA7000085B
(en )
1971-02-24
Flotation of sulfide ores
PH13366A
(en )
1980-03-20
Thermal concentration of non-ferrous metal values in sulfide minerals
ZM16373A1
(en )
1974-06-21
Thermal concentration of non-ferrous metal values in sulfide minerals
ZA704048B
(en )
1971-02-24
Concentration of non-ferrous minerals
ZA743372B
(en )
1975-05-28
Improvements in and relating to ferrous alloys
ZA751710B
(en )
1976-02-25
Improvements in and relating to the separation of metals
ZA742883B
(en )
1975-05-28
Improvements in and relating to alloys
ZA735337B
(en )
1974-10-30
Improvements in metal detection in ore
PH10102A
(en )
1976-08-25
Concentration of nickel values in oxidized ores