ASTANA. August 27. KAZINFORM. Operations at the Kashagan oil field have been suspended for three months because of violations of ecological legislation by an operator, the Italian company Eni, Kazakh Environment Minister Nurlan Iskakov said on Monday. Kashagan is the largest oil field in this Central Asian republic. Its reserves are estimated at 38 billion barrels of oil. Kazakhstan plans increasing the oil output to 100 millions tons a year by 2010 and to 150 million tons a year by 2015, to join ten largest oil producers in the world. Kazakhstan’s internal demand for oil is 25 million tons, Kazinform cites Itar-Tass.