* Supportbeams (I know they've been made in a thread already, but I'd like to see if I can do better)
* Mininglamps
* Hole in the floor with tripod above with descend rope
* Ore deposits ??? (they've been made also, but dunno what direction devs want the gameplay to go so that's for later)
But like I said, I started with a railroad:

Before I make junctions/crossings and so on, I'm somewhat insecure and look for feedback on:
- selected colors
- size/width
- wheter or not it's to "clean cut" compared to other tilesets.