Kazakhstan's Environmental Protection Ministry accused large oil and mining companies…of failing to comply with their environmental commitments and threatened to halt their operations. The ministry's list of alleged offenders includes an Eni-led consortium developing the major Kashagan oil field, Chevron-led Tengizchevroil, as well as Kazakh companies KazMunaiGas E&P and Kazakhmys…Chevron-led Tengizchevroil was fined $307 million this year for violating environmental law -- a decision the company has said it would challenge.