10:27The Corsicana oil field was discovered on June 9, 1894, in Corsicana, Texas. The discovery came unexpectedly while workers were drilling for water for the city. At a depth of around 1,035 feet, they struck oil instead, marking the first commercial oil discovery in Texas. This find would help spark the beginning of the state's long and powerful oil history. The Corsicana oil field became the first in Texas to produce oil in commercial quantities. It led to the construction of the state's first refinery, which was built by Joseph S. Cullinan, who would later found Texaco. Though small compared to later fields like Spindletop, Corsicana proved oil could be a profitable industry in Texas.