Oil arrives on La. shore, edges into key current

In this photo provided by the U.S. Coast Guard, spilled oil from a pipeline operated by Chevron Pipe Line Company is seen in the Delta National Wildlife Refuge near Venice, La., Tuesday, April 6, 2010. (AP Photo/handout, U.S. Coast Guard)

May 21, 2010 7:04:31 AM PDT
Heavy, sticky oil from a massive monthlong spill was starting to clog Louisiana marshes on the Gulf of Mexico as another edge of the partly submerged crude reached a powerful current that could take it to Florida and beyond.