Portable interferometer type methane gas indicator to measure the methane content in methane air mixture scale offers a range of . . . . . . . . methane by vol.
A. 0 - 5%
B. 5 - 10%
C. 0 - 10%
D. 0 - 20%
Answer: Option C
This Question Belongs to Mining Engineering >> Mine Ventilation
Related Questions on Mine Ventilation
The mechanical mixture of gases existing in a mine given off after explosion called
A. White damp
B. Stink damp
C. Black damp
D. After damp
A Drager Gas Mask does not filter
A. Water vapour
B. Nitrous fumes
C. Carbon monoxide
D. Carbon dioxide
Join The Discussion