Kazakhstan has contained the spread of contaminated oil within its borders by reducing exports to China and altering the schedule of supplies to domestic refineries, energy ministry and pipeline operator KazTransOil said on Wednesday. Kazakhstan suspended its oil exports to China earlier this month after organic chlorides contamination was found in crude supplied by a Kazakh producer less than a year after the “dirty oil” crisis in neighboring Russia. Unlike the Russian Druzhba pipeline problems in April last year, when 5 million tonnes of oil were contaminated with organic chlorides, the origin this time was Kazakh ... (full story)