CHARLESTON, W.Va. (AP) -- Action on key federal mine safety and health rules are is lagging, including a rule aimed at lowering exposure to coal dust that causes deadly black lung disease.
The federal Mine Safety and Health Administration was expected to issue the final rule in June, but now it won't be acted on until September.
Officials did not state a reason for the delay.
Researchers are urging action on the rule's enactment because of resurgence in black lung disease. It is being seen among younger Appalachia miners who have worked under current dust limits that were intended to protect them from the disease.
Black lung is an irreversible and potentially deadly disease caused by exposure to coal dust.