- Rubber for making tires, hoses, insulation, etc. ... or a rubber substitute, such as guayule from Texas.
- Oil, for lubricants if not for fuel.
- Sulfur, for chemical engineering.
- Gypsum, for mortar and plaster, among other things.
- Vanadium Pentoxide, for making sulfuric acid "the modern way".
There are lots of needful things for a society making all the "amazing things" that the KFS produces.
We've been growing a list of processes for our local campaign:
http://asmrb.pbworks.com/w/page/1131...%20Engineering
--
Michael B.