parametric design of a coal mine refuge chamber
and nine (9) persons taking shelter in a portable MineArc refuge chamber for 4 hours before rescue teams arrived at the chamber. Although, there are succinct differences between coal and metalliferous mining the technology can be applied across almost completely. Currently most underground coal mines have not had refuge chamber technology applied Section 26 of Regulation 854 (Mines and Mining Plants) under the OHSA covers the important requirements. Background information. In the event of a fire or other disaster, refuge stations should be located in all areas underground where there is a possibility that persons may not be able to reach a mine exit in a reasonably short time.