The national concern for new sources of liquid hydrocarbon fuels has been increasing. However, many of our most important chemicals, plastics, and fibers are based on light olefins and aromatics which are derived today from limited petroleum and natural gas supplies. DuPont has initiated programs to evaluate new sources of feedstocks for petrochemicals which will be available late in this century and early in the next. Shale oil, derived from the pyrolysis of Kerogen contained in Green River Oil Shale, appears to be a promising replacement feed for olefin production units.