In Albion, Pennsylvania (rural part of Erie County) there was a plant...the Swanson Boat Oar Manufacturing Company...that was entirely powered by a large single-cylinder steam engine. I had a look at it in operation, and shut down (two visits, same day) for reasons I won't get into...when I was twelve years old, about 1970.
The cylinder on that steam unit was about as big around as a small locomotive's smokebox. The flywheel was about 6-8 feet diameter; powering a line shaft...SET of line shafts...everything in the plant, except for the varnish line, was powered off that.
The boilers (there may have been more than one) were powered by scrap and shavings in milling the boat oars. As you can imagine, there's a lot of waste in turning a log into a one-piece boat oar.
I think the steam engine was a Skinner. Had a manufacturing date on it, the 19th Century. Had a fireman/engineer crew just to manage it in operation...lubrication, boilers, stoking, etc.
The plant burned down about 1974 - from the varnish shed, where they dipped freshly-cut oars and dried them by hanging them out. Burned to the ground. My old man was curious, and when we were in the area again, he went (out of our way) to see the plant.
The company had rebuilt, on a smaller scale, with new equipment. The steam engine was still in its bed, unrepaired, but with a plastic canopy. Not just a tarp, but with a crude frame. As if they wanted to preserve it, while figuring out what to do with it...but it had been there two years, it probably wasn't salvageable at that point.
The boilers, stacks, that whole section of the plant, was just a pile of rubble. Recognizable boilers sitting there, rusting, alongside the collapsed brick smokestacks.