Astana. February 29. Kazakhstan Today - The Ministry of Energy and Mineral Resources passed subsoil users estimations of export customs duties. The Minister of Energy and Mineral Resources of Kazakhstan Sauat Mynbayev informed in the interview today. He specified that there have been made changes in the estimations widespread among subsoil users as compared to the estimations presented by the Ministry for Energy at the government session. "Volume of export customs duties, 27 million tons, has not changed," S. Mynbayev concluded.