Ponca City OK The Ponca City Refinery was built in 1918, sits on about 2,500 acres, and employs more than 960 employees.It processes a mixture of light, medium and heavy crude oils. Most of the crude oil processed is received by pipeline from Oklahoma, Texas and Canada.The refinery is a high-conversion facility that produces a full range of products, including gasoline, diesel and aviation fuels; liquefied petroleum gas (LPG); and anode-grade petroleum coke. Finished petroleum products are shipped by truck, railcar and pipelines to markets throughout the Midcontinent region. The Pioneer Woman statue honors the legacy of the pioneering women of Oklahoma. This statue, “Confident” was created by Bryant Baker in 1930. The adjacent museum (closed when we were here) was built in 1958. The “Palace on the Prairie”, the E. W. Marland mansion. Marland discovered oil in Oklahoma in 1911, and gained his wealth via the Marland Oil Company, which later merged with another company that became Conoco.