Giesche Corp. was, during the interwar period, part of and owned by the German firm of Bergwerksgesellschaft Georg von Giesche's Erben and represented those holdings of Giesche's Erben, that after the implementation of the Treaty of Versailles with re-establishment of the Republic of Poland in 1922, were now in Polish territory; registration at Katowice as a Polish corporation followed with a name that had been registered in Prussia about 1907. The corporation was one of the largest mining concerns operating in Upper Silesia, Poland, during interwar. It had the largest Polish zinc output out of the largest zinc mines in Europe. It was one of the largest bituminous coal producers. It had smelters and rolling mills, factories and agricultural and forests properties. Its largest zinc mine was the White Sharley/Bleischarley Its biggest zinc mills were Giesche and Wilhelmina. The largest coal mines were Giesche and Kleofas. All the former property of Giesche's Erben in Upper Silesia, owned and operated by the Giesche family since 1704. It employed nearly 20,000 workers, for which housing quarters were built, today the monumental district of Katowice.