0	food	Foodstuffs
1	water	Good old H20
2	chemicals	Chemicals
3	ore	Rough ore
4	spice	Spices provide flavoring 
5	alcohol	Time to get drunk!
6	narcotics	Powerful mind-altering drugs
7	fuel	Fuel
8	precious metals	Gold, Silver, Platinum, etc
9	metals	Steel, Iron, etc
10	crystals	Basic crystalline structures
11	stone	Raw stone
12	slaves	Forced labor
13	machinery	Basic machined parts
14	electronics	Simple electronics
15	explosives	Powerful explosive materials
16	radioactive material	Fuel for nuclear reactions
17	gemstones	Finely cut rubies, diamonds, etc
18	waste	Pollution
19	medicine	Modern healing drugs