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Wiktionary
biomining

n. The use of microorganisms to extract ionss from ores

Wikipedia
Biomining

Biomining is an approach to the extraction of desired minerals from ores. Microorganisms are used to leach out the minerals, rather than the traditional methods of extreme heat or toxic chemicals, which have a deleterious effect on the environment.

Usage examples of "biomining".

To make biomining bugs impervious to mercury, arsenic and cadmium requires bioengineering, currently under way.