Almost a year after a natural gas pipeline explosion rocked Appomattox, Va., federal inspectors have issued a proposed fine of almost $1 million following an investigation that found safety regulation violations, according to the Lynchburg News Advance. The U.S. Department of Transportation's Pipeline and Hazardous Materials Safety Administration levied a $952,500 fine on Williams Gas Pipeline after investigators found possible failures to "address regulatory requirements for monitoring and preventing external corrosion," according to an agency news release. One of three pipelines that comprise the Transco line ruptured and then exploded on Sept. 14, 2008, injuring five people, leveling two homes and damaging about 100 other houses. The resulting fireball scorched land some 1,125 feet in diameter. Investigators discovered that external corrosion had caused the line to break.