On 8-12-10 at 3:24 PM, Mine Foreman found rock fall on the highline at break #217 on 4 South Mains. This was in the Number 5 Entry. MSHA was notified at 3:30 PM. Permission to re-route highline and lifeline was given. This fall will not be cleaned up. Area was dangered off. Timbers and cribs were set. No disruptions in ventilation were encountered. No injuries occurred.