Earthworks
This mod extends the capabilities of the Clay line of resources. It adds a new base resource : Porcelain.
Additionally, it adds a Potter, a Tile Maker, and a Ceramic Factory.
Finally, it makes the Kiln, the Potter, the Tile Maker, and the Ceramics factory increase the production on mine towns just as the clay pit did.
This mod will enhance the production capability of regions which have no access to hills or forests.