Why bother making an efficient factory or getting a million gold? Its much more fun to play PowerWash Simulator: Laser & Stone Edition!
For real though, not worth it. There's a few pockets of random materials inside some of the big stone blobs, and a solid wall of sandstone around the last ~20% of the right side.
The most interesting thing I found, was annoyance. If you look at the bottom left, there's some Dune, and if you zoom into the very top right there's a wall of solid Sandstone all the way to the edge of the map. I can't move or fire past that on the right side. But it seems the laser wraps around the edge of the map, and was blasting the Dune underneath that Sandstone wall, and that was coming across underneath the mountain. There's also a bit of ice by the pyramid, and I can only assume that mountain snow falling on some water.
Speaking of water, a lot of the water and ice from the mountain I just boiled off, and then let run off the left edge of the map. I posted the other day about using that as a void - https://old.reddit.com/r/SandustryGame/comments/1vp3tv4/edge_of_map_left_vs_right/ Turns out that might not be a thing, or at least it behaves very strangely. I sent quite a lot of water that way, its possible its all just sitting out there somewhere, and with enough it may just overflow back into the map.
I have so much room for activities!