Under Stumm's leadership, the Neunkirchen steelworks continuously expanded, including the construction of the first Thomas steelworks in the Saar region in 1882. In addition, he acquired
minette mines in
Lorraine and the construction of a blast furnace in
Uckange in 1890. In 1900 he initiated the purchase of hard coal mines in the
Ruhr Area (known as
Zeche Minister Achenbach). He sat on the supervisory board of
Dillinger Hüttenwerke AG and played a decisive role in its development due to the family's dominant shareholding. In 1875, he also acquired the Halberger Hütte, which his nephew and co-shareholder, Rudolph Böcking, managed. Thus, the family controlled all production areas of the iron industry at the time.
Political career In 1867 he was elected to the
Reichstag for the
North German Confederation as a representative of the
Free Conservative Party, which he co-founded. Federally elected, he was a member of the
Reichstag of the German Empire from 1871 to 1881. He campaigned against the abolition of iron tariffs in 1873 and was one of the main supporters of the reintroduction of protective tariffs since 1879. As one of the leading parliamentarians of the Free Conservatives (also known as the
German Reich Party), he acted against an expansion of parliament's powers and supported
Bismarck's fight against
Social Democrats and his
Anti-Socialist Laws and proposals to abolish passive voting rights. Together with the center, Stumm brought down the state subsidy for the accident insurance in the Reichstag in 1881, which meant that, as the social policy spokesman for the Free Conservatives, he came into conflict with Bismarck and his own faction. Since the government refused to support him in his fight against social democracy and the liberal press in the
Saar district in 1881, he resigned his seat in 1881, but was transferred to
Prussia in 1882. Bismarck is said to have called him "King Stumm" and
Friedrich Naumann called him "the Sheik of Saarabia" because of his wealth and demeanor. After he was ennobled as a
Baron von Stumm-Halberg in 1888 (he rejected his first ennobling in 1868), he returned to politics in 1889 and sat in the Reichstag as a member of the Free Conservative faction until his death. Due to his friendship with King
Wilhelm II, Stumm held great influence on government policy in the 1890s, especially social policy. The neo-Gothic Schloss Halberg and the nearby Stumm Church were built based on designs by the Hanoverian architects
Edwin Oppler and . The surrounding landscape park was designed by the Frankfurt architect . ==Personal life==