Shadows of the skylights form a backdrop for rust-welded machines.
Look at the floor–do you see the hole? That goes down a lonnnnnng ways.
This volume gauge could be read from 30 feet away, which is useful when the control panels and valves are that far away.
This is the crane that would be used to lower extra-heavy bits of copper ore into the fire of the furnace.
The engine room.
On the middle level of the Poacher House. For a detailed view of the chart see ‘See Reverse’.
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.
A ruined culvert near Oregon Creek, behind Old Main, the predecessor of the University of Minnesota-Duluth.
There were bins with hundreds of spools in them in the basement.