197 In the mine offices, hooks and a board with numbers was the system to keep track of who was in the mine and who was safe. Related Similar Images ...based on the tags: black&white, bokeh, numbers, rusty... One of the hundreds of wells across the depot, as seen through an open rail door. In the distance, the radome. The piano must have been a nice distraction; there is very little to do in Roberts. This is the crane that would be used to lower extra-heavy bits of copper ore into the fire of the furnace. These ceramic bricks were likely from the fireproof tunnel that connected the elevators. One of thousands in the complex. Part of a series of photographs where I capture the number “13” in industrial settings. This seemed to be the newest building on the property. Note the large belt pulley in the center of the frame. Follow the axel it’s on and you’ll see several belts still attached to the drive, which was originally steam-driven. An ajar car elevator car afar, technically. These machines circulated water through the powder from the ball mills. Gold and silver is heavier than gravel, so it sinks while the junk rock floats.