It is a major rail junction and industrial center and the site of the Dniprohes dam and power station, one of the country's largest hydroelectric plants. Large quantities of grain are exported. The city has steel mills, coking plants, aluminum and magnesium works, and factories that produce automobiles, farm machinery, and transformers. Well supplied with electricity, Zaporizhzhya forms, together with the adjoining Donets Basin and the Nikopol manganese and Kryvyy Rih iron mines, one of Ukraine's leading industrial complexes. The high concentration of older industry, however, has had a harmful effect on air quality.