What is the primary purpose of a methane detector in mining operations?

The primary purpose of a methane detector in mining operations is to detect explosive gas, which is critical for maintaining safety in underground environments. Methane is a colorless, odorless gas that can accumulate in mines, posing significant risks of explosion and fire when it reaches certain concentrations. By using a methane detector, miners can monitor the levels of methane gas in the air to prevent potentially hazardous situations from developing. This proactive approach allows for prompt action to ventilate the area or evacuate personnel if methane concentrations become dangerously high.

The other options focus on unrelated aspects of mine monitoring, such as air pressure and temperature, which, while important, do not address the immediate danger presented by methane gas. Additionally, assessing listening capabilities of equipment is not relevant to methane detection, highlighting the specialized role that methane detectors play in enhancing safety protocols within mining operations.