The final lift of a pillar was being mined when draw rock fell on the continuous mining machine fouling it in place. The incident occurred between the no. 6 & 7 entries of the 3-left off South Mains Panel (one break inby survey station 671). A retriever was used to free the machine - within 25 minutes after hook-up. The fall was inby the last row of bolts & no bolts were pulled.