Allied Paper - Mill C
Near the wet end of the paper machine is this pit covered by ceramic tile. I suppose it received the extra pulp that would drip off the paper machine in the early stages of production (this type of tile, unlike many other materials, was able to withstand the chemicals present in paper pulp).
This device appears to be the loading hopper to a broke pulper or something. If paper coming off the machine was of terrible quality or if the machine broke and ruined some paper, the waste paper would be put down this machine to be turned back into pulp to be mixed with fresh pulp for a future run.
Those vent pipes above the paper machine are really large. Actually, this probably has something to do with the inefficiency of the mill - modern paper machines do not discard their waste heat, but they collect it and it is reused for other purposes (heating other portions of the building or to pre-heat more boiler feed water), which saves on energy costs.
In a little room off of the No. 6 machine room, one finds this ancient computer. Unfortunately, someone has stolen the boards that used to be in its upper rack (they were present the first time we were in the mill).
The box on the wall there used to contain some sort of power monitoring and perhaps UPS system. When we were here the first time, the power was turned on in most of the building, and the machine in that box was flashing some screens of information about some voltages and loads. However, as with the computer boards, the machine's innards appear to have been stolen.
Back out in the No. 6 machine room, one finds this electronic control panel that once controlled the paper machine. The first time we were in Mill C, this device was also powered up (although the paper machine itself had already been removed), and it was flashing a number of dire warnings such as, "Headbox Feed Pressure Too Low", "Paper Machine Speed Too Low", "Stock Chest 1 Level Too Low", etc...
Stepping out of the No. 6 machine room, we find these devices which look like Allen Bradley Motor Control Centers - they were probably used to run the motors on the No. 6 and No. 7 machines, given their proximity to the paper machine rooms.