ROUNDUP - Three coal miners at the Signal Peak Energy mine were seriously injured Tuesday when an underground portion of the mine caved in.
Musselshell County DES said it received a report of the incident at about 8:37 p.m.
The agency said three miners became trapped and the mine's extraction team was able to get them out and above ground.
Two of the miners were taken by ambulance to a hospital in Billings, while the third was flown to a Billings hospital.
All three suffered serious injuries.
The collapse happened in a section of the mine near the end of what is known as the "long wall," which is an active part of the mine where operations take place.
The federal Mine Safety and Health Administration is investigating the incident, according to the Montana Department of Labor and Industry.
