Modeling buddy Jim, who is working on the Springfield Line in N-scale, mentioned he has space on the Berlin Line leg of the wye for an industry. He has a 12" x 100" space to work with, which is about 1,300' long in N-scale if my math is correct. That's a lot to work with...I'll bet we can fill it!
I suggested he look at New Britain Machine Company, an industry I'd love to model but it's south of where the layout ends and I just don't have the space.
The company was another major tool company that was the primary supplier for NAPA until the '60s. This site has an extensive amount of information on the history of the company.
Being a beautiful (but hot!) day, I decided to go take some pictures. Here's a shot of the main building. Two tracks ran along the side, you can make out a couple of rails curving toward it. There's a second major building to the right.
It would be a fun complex to model, even if it's only the primary building that was served by rail. Based on the maps and what I saw today, the side tracks ran the entire length of the building. I love these massive structures, especially if you can model them to scale (or close to it). It helps show the scale of industry in relationship to the railroad.