Don't you need to hang a gas monitor in the underground working face of nonmetallic mine?

There is no need to hang a gas monitor, but the gas should be monitored according to the actual situation. Generally, there is no need to hang a gas monitor in the underground working face of nonmetallic mines, but necessary gas monitoring is needed. Because in the underground working face, some flammable, explosive and toxic gases, such as methane, carbon monoxide and carbon dioxide, may be produced, which will pose a threat to the life safety of workers. Therefore, it is necessary to monitor the gas in order to find and deal with the gas problem in time. There are many methods of gas monitoring, such as hand-held gas detector and fixed gas detector.