This “pit” would allow workers to crawl below locomotives to service them.
In the upper left of the image you can see where the gas tanks used to be, along with the concentration equipment. Along the bottom you can also see some of the many railroad tracks coming and going from the plant–the ones visible here were incoming tracks that carried in hard coal from the eastern US.
Judging by the bed, this room was used by employees in its later years.
The elevator tower seems to have been built with expansion of the dock in mind.
Judging from old pictures and maps, raw ore was dumped through these hatches, stamped into a rough powder, and hastily sorted before sending the best ore to the mill. Mills charged by tons of rock sent to them, so it did not pay to send them obvious tails.
When the dock across the slip loads, the lighting below the otherwise dark ‘5’ can get a little wild.
To engage the air brakes on locomotives without their power being on, air hoses would be attached during repairs. Compressed air also powered many of the tools used.
On this production line, the office was elevated far above the floor.
Some parts of the doctor’s apartment in the Administration Tower were decidedly upscale. Look at the beautiful ironwork on that sink!