According to a Worker Adjustment and Retraining Notification Act (WARN) notice issued by Hendricks and Glen Alum Operations LLC on November 3 with state officials, those locations impacted include the No. 1, No. 5 and No. 6 deep mines and the associated preparation plant.

The WARN notice did not indicate the production plans for the mines, and projected a December 1 layoff date for the group.