U.S. oil company Chevron Corp. said it ruled out settling a lawsuit seeking some $6 billion in damages for allegedly dumping billions of gallons of waste in Ecuador's Amazon jungle...The lawsuit, representing 30,000 Amazon Indians and settlers, opened in Ecuador in October 2003 after a decade of wending through U.S. courts...Chevron has denied the allegations, saying Texaco [part of Chevron] followed Ecuadorean environmental laws and then spent $40 million on a cleanup...The case is the first time that a foreign oil company has been subjected to Ecuadorean jurisdiction for allegedly damaging the environment.