More National Guardsmen joined the effort Tuesday to remove globs of congealed oil from the Delaware River before rising temperatures liquefy the oil, and hearings opened into two other oil spills in Texas and Rhode Island.
A harbor pilot testified he radioed three warnings to the tanker World Prodigy before it hit a reef and spilled 420,000 gallons of oil off the Rhode Island coast. A Coast Guard officer said the tanker's captain apparently used the wrong chart to plot his course.
In Texas, the pilot of a tanker that collided with a barge in the Houston Ship Channel testified Tuesday that his vessel didn't react as expected just before the accident that ruptured the barge and spilled 250,000 gallons of oil. He said sediment buildup in a channel may have kept him from making a turn.
On the Delaware, more than 500 people, including 300 Delaware National Guardsmen, and 22 boats were involved in the cleanup Tuesday. In Philadelphia, Coast Guard spokesman David Oney said Delaware was sending 150 more Guardsmen.