Investigation and cleanup crews remained on duty in Mayflower, Ark., following the March 29 ExxonMobil Pegasus pipeline rupture, which spilled thousands of barrels of Canadian crude and triggered evacuation of nearby homes.
As of April 2, on-site state, federal and corporate officials had not yet determined the cause of the spill and could not predict when it would be repaired or when residents of the 22 evacuated houses could return.