1. Ameling, D., Steel as the most important construction material: an overview of the global iron and steel industry, Stal’, 2013, no. 5, pp. 24–28.
2. Soskovets, O.N., Scientific and technological progress in metallurgy and its competitiveness at the present and future, Stal’, 2014, no. 3, pp. 2–5.
3. Kondrat’ev, V.B., Global cement industry. http:// www.perspektivy.info/rus/ekob/mirovaja_cementnaja_ promyshlennost_2012-06-06.htm.
4. Artes, A.E. and Tret’yukhin, V.V., Production improvement of grinding balls: quality and innovations, Kompetentnost’, 2014, no. 3, pp. 50–54.
5. Steblov, A.B. and Berezov, S.N., Casted iron balls for grinding of the materials, Lit’e Metall., 2012, no. 3 (66), pp. 45–49.