The section foremen on unit #1 called out at 7:28 a.m stating he had a fall inby his tailpiece located in the 4th south west submain (spad 21+20) xc # 28 entry # 4. No one was injured, he did have a change in ventilation. Called and reported to MSHA 7:30 a.m. Contacted state agency at 7:36 a.m. Approx size 19' in length x 19' width x 6' in height or greater.