Astana. April 4. Kazakhstan Today - Askar Mamin has been appointed the chairman of Kazakhstan temir zholy (KTZ), the agency reports referring to the prime minister's press service. Today the Prime Minister of Kazakhstan Karim Masimov introduced the collective of Kazakhstan temir zholy the new chairman, A. Mamin, appointed by the decision of the operating company Samruk holding, who earlier held the post of Astana akim.