Oils include palm oil and shea butter(sahel). He became wealthy off oil and gas. He also voted against removing oil and gas exploration subsidies. The city also produced soap made of refuse olive oil. It imported silver, gold, olive oil, and wine. Denmark depends almost entirely on thermal power generated from coal, oil and gas. The technique was adapted from oil and gas extraction techniques. Explorations are under way to exploit deposits of oil and gas. There are several Navajo organizations that deal with oil and gas. Many Umbrian dishes are prepared by boiling or roasting with local olive oil and herbs. India is a major customer of Burmese oil and gas. Microphase separation is a situation similar to that of oil and water. Natural resources include timber, fish, gold, copper, offshore oil, and hydropower. Margarine made from hydrogenated soybean oil began to replace butterfat. Deterrents such as creosote, diesel oil, or ammonia can be used.