Flint Ridge Mine #2 has experienced a non-injury unintentional roof fall approximately 2000 feet outby the 002 section in the return of 4 Main in #1 entry. The fall was approximately 8 feet thick, 20 feet long and 50 feet wide in an intersection. The area was initially supported with 60 inch fully grouted rods. Laminated shale gave way due to deterioration.