Just an update, I was out at the rock cut yesterday and poked around a bit more than normal. The woods around the rocks are littered with tie plates and spikes. Various pieces of what appear to be freight cars are scattered about, at least one was lodged under a rock near the water, a piece of twisted and broken rail is protruding from the ground, and generally there is still a lot of evidence of the wreck to be found all of these years later. According to a neighbor we had when I was a child the deep water adjacent to the rock cut also contains various bits of the train, he frequently SCUBA dived in that area. I really find that impressive considering the wreck occurred in 1960, over 53 years ago. I hope the people who manage the Rail Trail work with the state (who owns the metal) to preserve this stuff instead of pulling it out to scrap it in an effort to beautify the trail or make it safer. They have already been stripping the rail out of the areas in Lebanon where they are expanding the trail towards White River Jct., I'm not sure where that rail is going but it would be nice to see it go to a short line in need of decent rail.
A piece of freight car lodged under a rock near the water:
A piece of twisted/broken rail protruding from the ground: