The results can be extrapolated to the other metallurgical slag dumps if the wastes meet the following conditions: they originate from steelmaking in the electric arc furnaces; they come from the casting of steels; and they come from making the following types of steel: nonalloy casting steels, alloy steels, and carbon steels. The metallurgical solid wastes contain amounts of: chromium, manganese, molybdenum, nickel, and vanadium. The presence of these elements is connected with the metallurgical process and the type of produced steel.