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US984075A
|
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Process for blackening browned ferro-ferric hydrate.
|
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GB190913849A
|
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Improvements in the Treatment of Pyritic Copper and Copper Nickel Ores.
|
|
GB190913848A
|
|
Improvements relating to Black Magnetic Iron Hydrate Utilizable as a Pigment.
|
|
US947789A
|
|
Treatment of pyritic copper and copper-nickel ores.
|
|
CA125424A
|
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Copper manufacture
|
|
CA120817A
|
|
Iron compounding method
|
|
GB190912106A
|
|
Improvements in the Preparation of Iron Compounds.
|
|
CA118986A
|
|
Matte preparation
|
|
GB190812750A
|
|
Improvements in the Treatment of Copper Mattes.
|
|
CA114501A
|
|
Pyritic smelting system
|
|
GB190802971A
|
|
Improvements in Treating Pyritic Copper and Nickel Ores.
|
|
US882234A
|
|
Smelting sulfid ores.
|
|
GB190622166A
|
|
Improvements in Smelting Ores Containing Sulphides.
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