(Hopefully this is kosher.)
I’m in a fair few EVE-related Discord servers with #industry channels, but didn’t see a server dedicated to industry in EVE. I asked around, folks seemed interested, and it seems like it’s already been useful. Here 'tis:
https://discord.gg/FDZ33E9gqU
It’s a place to ask questions, share resources, ogle spreadsheets, and chat about the best Industrial side of EVE Online. 