An unintentional roof fall occurred in 1st Northwest main at 6:25a.m. The fall was in the #3 entry outby the face of the # 3 entry and 50'inby S 1379. Fall was 50' to 60' long and 17'-19' wide. Area was bolted with 6' super twist bolts in T2 channels with 12' cable bolts on 8' spacings.