What initial action should miners take in the event of a fire in the mine?

In the event of a fire in the mine, the most appropriate initial action for miners is to follow the mine's emergency response plan. This plan is specifically designed to address emergencies like fires, and it outlines detailed procedures to ensure the safety of all personnel within the mine. The emergency plan typically includes protocols for evacuation, communication, and coordination with emergency services.

By adhering to the established emergency response plan, miners can effectively navigate the situation, as it provides clear instructions tailored to the specific layout and safety systems of the mine. Furthermore, the plan includes drills and training that miners have practiced, which can minimize confusion and panic during an emergency.

In contrast to the other options, while using fire extinguishers or calling for outside assistance can be part of the overall response, they are not the designated initial steps prescribed by the safety protocols in place. Evacuating the mine immediately might seem logical, but without first understanding the situation and following the established procedures, it could lead to chaos or compromise safety. Thus, following the mine's emergency response plan is pivotal and serves as the cornerstone of an effective emergency response.