Roof falls were discovered in the 8 R panels SE Mains 10,000' from the working section. Failure occurred due to laminations above the anchorage zone of 5' torque tension roof bolts. The are was developed 3/11/11. ventilation and the transportation of miners' were not affected. No injuries occurred as a result of the fall. #8 Entry 20 Break 2 breaks outby 66423, 50'LX19'WX8'H.