Ball Mills Before the gold could be extracted, the rock was turned to powder. Depending on the size of the steel balls inside the mill, the rock would be reduced to a certain size. So, multiple mills were usually used in stages. Related Similar Images ...based on the tags: collapsing, doors, gears, machinery, mills... Aluminum spools replaced their wooden counterparts, later in the factory’s history. Miscellaneous math and strange instructions remain all across the shipment section walls. Sadly, this section likely fell into disrepair before the others. Inside the office was a small furnace and a collection of mechanical belts. You can see “SERVICE AT COST” and “POOL 168” in the background. Books in nooks and not getting a look… about the crook with hooks that cooks. From the door where mine carts were dumped into the Concentrator, the erosion around the former Santiago Tunnel on Treasure Mountain is obvious. The rails barely connect to the ground anymore. A dead belt-o-vator. The piano must have been a nice distraction; there is very little to do in Roberts. An abandoned ranch on the east side of the tracks. This was not the Colmor Cutoff they were waiting for. A ruined platform on the railyard platform side of the warehouse.