An unintentional roof fall occurred in the b mains section MMU 001. The fall started in an unsupported cut in the crosscut 3-2, 1 crosscut outby SS 5338, and extended outby for approx. 30'. Width of the cave was approx. 18' and the height was undetermined. Exact cause of the fall is unknown but we assume that reduced cover and a stream channel contributed to the fall.