“Three oil-field workers were killed Monday morning in a head-on collision south of San Antonio, the third deadly crash within two weeks on a South Texas road officials said has become heavily traveled because of a boom in nearby drilling.” The crash happened on Texas 72 near Tilden, Texas, approximately 75 miles south of San Antonio. It is believed that the crash may have been caused by fatigue. “All three fatal crashes – which have killed five people – involved drivers working in the oil and gas fields” according to Texas Department of Public Safety Trooper Clint Walker. “The increase in crashes is likely due to an increase in traffic, Walker said, most of which stems from a boom in drilling in the Eagle Ford Shale formation.” It is believed that the three men killed in the crash were from the Rio Grande Valley and were on their way to work. “‘We just have so much more traffic because of all the oil and gas activity,’ Walker said. ‘These guys are working a tremendous amount of hours and not getting enough rest. It’s very, very dangerous.'” The rise in energy prices has led to an increase in exploration for oil and gas in the Eagle Ford Shale region in South Texas and other areas in Texas including the Barnett Shale region. Other regions seeing significant land based oil and gas exploration include the Bakken Shale in North Dakota and Montana, as well as the Marcellus Shale in Pennsylvania, New York, West Virginia and Ohio. Houston Chronicle, November 1, 2011.