Marble, granite, limestone, onyx, travertine, sandstone, slate.
Agricultural products: wheat, corn, soybeans, rice, cotton, sugarcane, etc. minerals: iron ore, copper, aluminum, limestone, etc. fossil fuels: coal, oil, natural gas, etc. timber: pine, oak, cedar, etc. livestock: cattle, pigs, chickens, etc. fish: salmon, tuna, cod, etc. plant fibers: cotton, flax, etc. metals: steel, brass, aluminum, etc. plastic resins: polyethylene, pvc, pet, etc..
