Exxon Mobil operates more than 1,000 miles of pipeline that is in similar condition to the aging crude-oil line that ruptured and spilled thousands of gallons of oil into a Mayflower neighborhood more than two years ago, attorneys with the U.S. Justice Department said Tuesday. The attorneys commented in a document urging the 5th U.S. Circuit Court of Appeals in New Orleans to deny Exxon Mobil's request that the court stay, or delay, a federal agency's order that the company comply with several safety directives as a result of the March 29, 2013, accident in Mayflower.