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US953142A
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Apparatus for treating antimony ores.
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CA114663A
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Preparation of antimony ore
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GB190807429A
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An Improved Process of and Apparatus for Treating Antimony and other Ores
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US948545A
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Process of treating antimony ores.
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US787758A
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Process of treating products containing vanadium, molybdenum, titanium, and tungsten.
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GB190300784A
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Process of Treating Vanadiferous Ores and Products.
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CA38710A
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Treatment of silicated nickel ores and pyritic ores of nickel and copper
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CA37826A
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Treatment of certain matts and ores for the separation of nickel and cobalt from copper
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