By diving into the depths of the world you can find a new series of minerals, gems and other elements from the underworld.
The list of metals and elements added by the mod up to Beta 0.1.6 are:
For all of these, there are various uses, such as the manufacture of weapons, armors and tools, as well as decorative blocks of both metal and rock. Adding to this are other functionalities such as processing items, fuel and others