Environmentalists who criticize skimming say that under ideal conditions, about 20 percent of that mixture would be oil, but its generally probably closer to 10 percent.The resulting disc bears a promotional sticker that reads 88 percent focus group approved.Many people have fled in the last few months, said one resident whose family has longtime roots in a village near the shootings He asked that his only his first name, Luis, be published because he fears for his safety His relatives abandoned their homes this spring to join him in a larger city where he lives.