Mine are, logs, lumber, cattle, milk, other dairy, oil and every manner of crated freight. I have a carfloat interchange so just about anything can come that way.
I will and/or do have a few agricultural type industries on the layout. The big business though will be a Rocky Mountain Pusher Station. With all the track and service buildings required to keep those monsters in fighting form, it will take up a lot of space and thus be the centre of attention on my layout.
Actually at that time period you would not have gotten to make a rate. Rates were regulated by the government. Railroad rates weren’t deregulated until the Staggers act of 1980.
My harbor layout cars are brought in and out via rail barge. Industries and businesses served include: Wharf shipping warehouses Power plant Soda bottling/distributor Import warehouse Brewery A few small warehouses
I’m building a tannery, which will get its hides from my meat packing plant, along with salt and acid from “elsewhere.”
I load coal at a mine and also unload it at a coal and oil dealership at another point on the layout.
I’ve also got a brewery, a cloth-oriented factory called Moose Mills, and the Powder Milk Biscuit Company. Then there’s Interstate Pipe, the Drosophila and Melanogaster Wholesale Fruit warehouse and a scrapyard.
It may not be an “industry,” but the icing platform for ice-bunker reefers is very much a part of the process for shipping meat and fruit. It also serves the express reefers that will visit the Railway Express Agency once that’s built.
Finally, I have a car float that serves to take goods to and from some unknown place off the layout. Again, it’s not an “industry,” but it can be thought of as one in the context of operations and switching.