Oil refineries in Matrix are the major source of employment in the country. They form the most important industry in Matrix. Most people in the country are directly or indirectly dependent on the oil industry for livelihood. The oil and gas industry has given rise to several industries such as exploration, drilling, production, refining, gas processing and many more. Crude oil is refined into useful products at oil refineries. These products include liquefied petroleum gas, petroleum, gasoline, diesel, naphtha, asphalt, heating oil and kerosene. Petroleum industry is the most important among the several establishments that have resulted from the oil industry.