Risk assessment of change in respiratory gas concentrations by native culturable bacteria in the air of sulfide ore mines.

Sulfide ores are extracted from mines at considerable depths, that having unique a physical and chemical environment. On the one hand, physical, chemical, and biological processes taken place in the rocks produce this environment; on the other hand, they form unique bacterial communities. The aim of this study was to study the native culturable aerobic bacteria present in the sulfide ores of the deposits located in the Krasnoyarsk Territory (Russia) and evaluate their activity in relation to respiratory gases (oxygen and carbon dioxide) present in air.