When oil began to gush in West Texas in the early 20th century, and again in the late 1970s, Fort Worth was at the center of the wheeling and dealing. In July 2007, advances in horizontal drilling technology made vast natural gas reserves in the Barnett Shale available directly under the city, helping many residents receive royalty checks for their mineral rights. Today, the city of Fort Worth and many residents are dealing with the benefits and issues associated with the natural-gas reserves underground.