For example , sulfate - reducing bacteria ( SRB ) produce H S which precipitates metals as a metal sulfide .
Another application of geomicrobiology is bioleaching , the use of microbes to extract metals from mine waste .
Sulfate - reducing bacteria ( SRB ) produce H S which precipitates metals as a metal sulfide .
Another application of geomicrobiology is bioleaching , the use of microbes to extract metals from mine waste .