Chad has suspended all activities of a China National Petroleum Corporation subsidiary after it violated environmental standards while drilling for crude oil. Oil minister Djerassem Le Bemadjiel announced on state radio that the government had decided to suspend operations indefinitely after finding "flagrant violations" of standards at the Koudalwa field. "Not only do they not have facilities to clean spilled crude, there were also intentional spillages in order to reduce costs," the minister said. "In the oil sector you don't do this.