Synopsis As Introduced Amends the Coal Mining Act. Provides that a mine operator must provide the number of self-contained self-rescuer devices as required by the mine's approved Mine Safety and Health Administration Emergency Response Plan. Removes language concerning plan requirements submitted for approval to the Mining Board. Provides that rescue chambers must be provided and located within 1,000 (rather than 3,000) feet from the nearest working face of each working section of a mine. Provides that outby rescue chambers must be provided at distances and locations approved in the mine's approved Mine Safety and Health Administration Emergency Response Plan. Makes other changes. Effective immediately.