N. Main set. #9 inter. 2 way-fell in approx. 6-12' high-16' l wide, 25' l. bolted with 6' fully grouted resin bolts and 6"" x12"" header boards. chen was spot bolted with 12' lb cable tenain bolts. Cover 300' mining on top of pillared pits seam. top laminated shale in the streaks of sandstone chea dangered off cribbed off will not be cleaned up called hot line 54pd.