Paper mill? Nothing is more complex than making toilet paper. 8,000 pound rolls at 4,000 meters per minute. One every eight minutes. Then it has to be converted to consumer rolls and packaged. Port Townsend has a great mill. Jenks, and Soldenifil in Idaho. $40 /hour to start as a millwright, mechanic, electrician, or boiler operator.
I worked in a paper mill for a summer job. The stench is awful. I pity someone that works in a place like that for a living.