The U.S. Department of Labor’s Mine Safety and Health Administration announced it will issue its Final Rule for Examination of Working Places in Metal and Nonmetal Mines on January 23. The new rule will be go into effect on May 23. 

The final rule requires examinations to be conducted before miners are exposed to adverse conditions; that affected miners be notified when a hazardous condition is found; and that a record of the examination include the locations examined, the adverse conditions found and the date of the corrective action.

Nearly 250,000 miners work at more than 11,800 U.S. metal and nonmetal mining operations.