Technology and efficiency of replacement of natural gas and part of coke by a pulverized coal on Ilyich Iron and Steel Works of Mariupol - V. V. Klimanchuk; N. V. Kosolap; I. A. Lukjanenko; V. A. Strutinskij; S. L. Jaroshevskij; T. A. Ivleva (Metal and casting of Ukraine, 2013)