ROCK SPRINGS, Wyo. (AP) — The FMC Corporation in southwest Wyoming annually mines the most trona in the world.

And the firm is playing it safe with a longwall-mining project that could cause ground subsidence in areas with gas pipelines.

This summer FMC teamed up with an emergency response consultant, the Sweetwater County Emergency Management team, law enforcement, first responders and fire department representatives to develop an action plan in the case of subsidence.

Subsidence is the effect of sinking ground levels often caused by underground mine voids.

County Emergency Management Coordinator Dave Johnson welcomed the proactive approach by FMC.

Johnson tells the Associated Press that as a result there is a plan in place if something should happen.