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Method for recovery of nonferrous, rare and precious metals from robust minerals
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Sposób ekstrakcji kobaltu, niklu, miedzi i metali towarzyszących z rud tlenkowych
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Method for obtaining cobalt and nickel from ores and ore concentrates
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2002-06-17
Method of recovering metallic fractions, in particular copper and its alloys, from metallurgical ashes and slags
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Method for the extraction of gold, silver and copper from ores
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2002-05-15
Precious metal recovery