Early milestones included a charcoal furnace and, by 1888–1889, the site’s first steelworks and a second blast furnace. Competitive pressure from low-cost German imports forced a shutdown in 1911, but production resumed with the outbreak of World War I. Technological modernization followed, including Switzerland’s first electric arc furnace in 1919. After another closure in 1924 as a result of falling steel prices, Ludwig von Moos built a modern steel plant in 1939, ensuring domestic supply during World War II and supporting postwar expansion. Leadership passed to Walter von Moos in 1970, before banks gradually assumed ownership. Swiss Steel AG was formed in 1996, majority acquired by Schmolz+Bickenbach in 2003, and rebranded Swiss Steel Group in 2020.

Today the Emmenbrücke site (Steeltec AG) remains an active production location within a global specialty long steel producer. It focuses on long steel products and supports industries such as automotive and mechanical engineering.