Aerospace and defense, agribusiness, automotive, bioscience, financial services, manufacturing, energy, and transportation and logistics are the largest industries in Ohio. There are 5 petroleum refineries in Ohio. They produce over 500,000 barrels per day, which is 3% of the US’s total capacity and makes it the 3rd largest producer of natural gas in the country. Also, the world’s largest oil storage facility is in Cushing, Oklahoma.