Toward the end of World War II, oil exploration accelerated in Utah. Several large companies came to the State including Standard Oil of California, Pure, Continental, Gulf and Union. A local Salt Lake Company, Equity Oil Company, beat them all to the punch in drilling the first truly successful commercial oil well in the Uinta Basin. Under the leadership of J.L. Dougan, Equity completed a well in Ashley Valley on September 18, 1948. Initial production was 300 barrels a day. The discovery ignited a series of discoveries in the Uinta Basin over the next several years which included major fields such as Roosevelt (1949), Red Wash (1951), Walker Hollow (1953), and Bluebell (1955). These fields became a part of two giant oil-producing complexes - Greater Altamont-Bluebell and Greater Red Wash.