ASTANA. December 10. KAZINFORM /Aigul Tulekbayeva/ Prime Minister Karim Massimov warned the metallurgists not to expect reduction of tax rates in case if they raise the prices for the products. Addressing the participants of the II Congress of the Workers of Ore-Mining Industry, the Head of the Government reminded that the state had cut the rate of taxation for the ore-mining ventures amid the crisis. Massimov said the ore-mining ventures had to raise their profitability through increasing the productivity of labor and implementation of new technologies.