I too have always been curious about the outcome of things at Keystone. I understood one of the owners, probably now deceased, had a 2-6-0 and a "F-M diesel" both in 19 inch gauge. The firm had done quite a bit of interesting work, including the two engines at LK&P and establishing the construction drawings for the 4-4-0s at Promontory National Park. Other 19 inch gauge equipment from this firm exists at Swanton, and at a racetrack in Kentucky.
I have guessed this was the facility location. A few steel 3' gauge flatcars were supposed to be on the site of the shops at the end.
Herminie, PA
Regards,
O. Anderson
groups.yahoo.com/group/18inch
Edited 1 time(s). Last edit at 02/21/2017 10:03PM by o anderson.