Skyway The old way to get to the elevator from the mill. Related Similar Images ...based on the tags: chutes, doors, heights, holes-of-death, ladders, peeling-paint, rusty, silos, trees... At Treasure Mountain mine. This collapsed building was likely the 1937 Compressor House, which pushed compressed air and water into the Sanitago Tunnel in the time it was producing. Winter skies over Allouez Bay. From a distance, it looks almost fragile. Looking toward the Quenching Tower from the coal tower platform. A switch for the yard engines, now on the edge of the property where nobody will find it. Squinting from the top floor through the skyway, one can feel small, like they’re in a heavy industrial dollhouse. I’ll remember the neon glow fondly. The balcony used to be beautiful, you say. I say, it still is. This part of the workhouse was sheathed in fiberglass, but now you can see its insides from a mile away. The tallest dock structure is an equipment elevator that connects the many dock levels.