If you travel down US 22 toward the state line with WV and get off at exit for Burgettstown as you head into town an as you leave town short piece down the highway on the right hand side of PA 18 you will see a rusted and rotting away miniature train set consisting of a couple old Plymouth Switchers on a short piece of track that have been sitting there for many years.
https://en.wikipedia.org/wiki/Plymouth_Locomotive_Works
Locals say the tracks they sit on went all the way into town at one time but that's not true the whole story is very different . They where narrow gauge and very small compared to a regular railroad engine and typically used to serve steel mills and quarry's possibly even coal mines and the area looks like it was at one time stripped of coal and has a history of coal mines in the area some of which there are no trace when they came back and strip mined the area. .
Of course the bigger question why where they just abandoned there
Most where sold to other industrial users or put on display .There is one at a gas station in Tarrentum Pa Picture Below belonged to Allegheny Ludlum Steel now AK Steel and one at Mars Pa. Train Station Museum but many more where scrapped for their metal value .
Here is a surplus navy one which was little bigger that Carnegie Mellon University used to haul coal cars to its boiler plant which has since been converted to gas.
But for now if you want to see something unique they are still sitting there .
Well seems I have gotten a different answer. They belonged to a gentleman who had a used industrial
Equipment Business many years ago on this site on both sides of road and these where left behind in the field which was full of junk for what ever reason after business closed and was cleaned up. One of the engines belonged to Wheeling Steel at one time so they never ran thru Burgettstown or local mines etc . as some locals claim . Yes there where tracks in town but those where full size railine tracks .
Which makes sense these are narrow gauge rail trains not designed to run on regular gauge tracks.
So mystery partly solved maybe they could not get clear ownership to scrap them or they left them as a curiosity piece either way still neat to see.