An unintentional roof fall occurred in the 2 South Mains 50w in the #3 entry. The fall was approximately 10' high x 16' wide x 60' long in the #3 entry and 10' high x 16' wide x 60' long between #2 to #4 x-cut. The immediate roof consisted of laminated shale type material. Adverse geological conditions contributed to the fall. No injuries occurred because of this accident.