Here is a link to a blog post with photos about this site in New Haven. There are not many abandoned sites left in New Haven due to the favorable market so I was glad to get a chance to explore this ruin.
http://nassahegon.blogspot.com/2016/07/former-national-pipe-bending-company.html
you really have taken the exploration of abandoned sites to a level I've never seen. good job.
I checked out your other pieces and the westerly-norwich railway was one in which I never heard of. I used to
roam around those lands when I lived just up the road near the end of lantern hill rd.
I love the area around the casinos. The mill towns and rural communities tell a compelling story. I particularly like the abandoned mills and numerous burial plots. I intend to write a book on the industrial history of Connecticut which begins with the exodus from the country to Norwich and other mill towns.