Just wanted to say I love this tileset. I use it along with Mayday's sprites and it really brings the game to life.

One problem that I thought I would bring to your attention:
Ever since installing the mod, I could not make coke from bituminous coal, and trying to make it from the manager told me I lacked enough "tetrahedrite". Well I figured it was a problem with the raw files, so I changed the order of the text in "matgloss_stone_mineral.txt" to exactly match the order of the text in the original raw file, and it worked! I have absolutely no experience with Dwarf Fortress raw files, so I don't know what cleaning it up could have done, but you may want to take a look and see if you can't smelt coal either; may be a bug.
Cheers.