Because the shaft is nearly vertical, rocks riding inside shift a lot. To keep them from breaking down the door and raining into the shaft.
“Ballistite is a smokeless propellant made from two high explosives, nitrocellulose and nitroglycerine. It was developed and patented by Alfred Nobel in the late 19th century.” -Wikipedia.
Below the pressure gauges are rows of little pipe fitting drawers.
The control room for Manitoba Pool Elevator #3 was the most modern of any I saw in Thunder Bay. Apparently, 25 men were working on the day this elevator shut down.
The pipes in the boiler would be full of water, so the heat in the furnace.
As photographed from a cement piling for Slip #3 poured in 1935, disconnected from land by erosion. How do I know the date? A pair of steamship engineers carved their initials and ranks into the wet cement!
Beside the shaft building are two fans on skids, indicating they were used underground.
A nice view of the aurora borealis (“Northern Lights”) strong enough to outshine the industrial lighting at the power plant. The lights in the foreground direct ships discharging coal for the station.