» Fri Jun 08, 2012 1:47 am
Where the dragon tongue grows there are various cavaties that emit steam. This steam, as found in areas around Yellowstone, has a tendancy to smell very much like sulfur. That scent means that there are vast quantities of sulfur deposits just below the surface, which means it should only require a mining pick to retrieve Sulfur.
Potassium Nitrate, on the other hand, is a bit more difficult to find. It is usually extracted from Nitrogen-rich soil through a filtering and drying process. Since none of that technology exists in the game, Potassium Nitrate would be extremely difficult to include.
Wait a few years, maybe the science will catch up with your dreams.