If a coal mine is dangerous, who must be immediately informed?

The appropriate response when a coal mine is found to be dangerous is to inform the supervisor immediately. This aligns with workplace safety protocols where supervisors play a pivotal role in maintaining safety standards and taking corrective actions. The supervisor is typically responsible for overseeing operations on-site and has the authority to initiate necessary safety procedures, including evacuation if necessary, or addressing the hazards that have been identified.

Notifying the supervisor ensures that urgent safety measures can be implemented swiftly, minimizing risk to all workers. They have the experience and knowledge to assess the situation critically and formulate a response to the danger presented by the mine conditions.

Other options, while relevant, do not provide the immediate action needed in such a scenario. Local authorities, the company's owners, or the mine safety committee would typically be informed afterward or at a later stage, but immediate action must first come from on-site personnel who can directly manage the situation.