Plus 4-inch waste on the left and plus 3-inch waste on the right enroute via belt haulage from the picking belts to the dump. The man probably was greasing the bearings. One-half of the mine run rock was discarded at this stage. This is the source of the "A-J rock" that forms the rock dump and is used for fill throughout the Juneau area. Discarding half the ore cut grinding costs with little loss of gold. If all the rock had been ground the mine would not have been profitable.