The increasing demand for uranium combined with the improving economics of uranium production have resulted in a significant upsurge in exploration and mining efforts in the South Texas Coastal Plain uranium province. Texas ranks third in U.S. uranium production. Today, potentially commercial deposits have been delineated along an arcuate belt that stretches more than 250 miles from the Rio Grande into the middle Coastal Plain. The extent of these known deposits, both areally and stratigraphically, combined with the large areas that remain little explored, suggest an ultimate ore reserve potential that could significantly affect the economy of the State.