The call you make first

Any death of an individual at the mine, whether or not the person was an employee.

An injury at the mine that could reasonably have killed the miner, even if they survived.

A miner trapped or pinned for more than 30 minutes, whether or not the entrapment looked life threatening at the time.

Water, slurry, or gas entering the workings without warning: a breakthrough from old works, a pond, or a flooded pit.

Methane or coal dust ignitions, including a flash that burns itself out and hurts no one.

Any unplanned fire still burning 30 minutes after it was discovered, wherever it started on the property.

An unexpected detonation, misfire, or burning of a blasting agent or explosive, including at the magazine or during loading.

A roof fall at or above the anchorage zone where bolts are in use, or any roof or rib fall that impairs ventilation or blocks passage.

An outburst that makes miners withdraw or that disrupts regular mining for more than one hour.

An unstable condition needing emergency action to prevent failure, one that forces an evacuation, or an actual failure of an impoundment, refuse pile, or culm bank.

Damage in a shaft or slope that endangers a miner or keeps the hoist out of service for more than 30 minutes.

Anything at the mine that kills or injures a person who was not at the mine when it happened, such as a flyrock or haulage incident that reaches a public road.

Accident is defined in 30 CFR 50.2 and reaches past injuries to unplanned fires, explosions, inundations, and other events. A call that turns out unnecessary costs nothing.