Different doors for different vehicles, I would guess. White Pine Mine used tire-based vehicles, rather than track-based, making it pretty different than other mines I’ve been to.
Paint lines were constantly monitored through big windows. Adjustments could be made on the dedicated consoles. This is what most of the painting floor looked like.
A long tunnel stretches toward the Mississippi. Was this the route Model Ts took on their way to waiting barges?
Peering at Stelco’s abandoned steel rod rolling mill, not demolished. The rectangular on the right in between is the boiler house that heated Stelco.
The underwater superstructure of the dock was visible through these big holes.
No ambiguity here… miners, check in at this office.
The end of the monorail in the nitrating house.
The orange bars were secured to the tunnel walls to support electric lines for the mine carts. Lower parts of the sand mines were allowed to flood. The water was perfectly still, and made for a mud so thick it could suck off your boots.
2005. Looking across the Mississippi from a park the night after the first snow.