ArcelorMittal, the world’s leading steel and mining company, has appointed Valérie Massin as country head Luxembourg, succeeding Henri Reding, the group announced on 11 August 2025. The appointment coincides with a series of substantial investments aimed at increasing production capacity and improving environmental performance at its Luxembourg facilities. For his part, Reding has taken up a position at the company’s corporate-level health and safety department.
Massin, a graduate of the Faculty of Law at the Université Libre de Bruxelles and the College of Europe in Bruges, began her career with the former TradeArbed in 2000 as a lawyer before moving into human resources. Most recently, she was head of human resources for ArcelorMittal Europe Long Products, overseeing sites including Belval, Differdange, Rodange and Dommeldange.
Production capacity expansion
ArcelorMittal highlighted the construction of a new electric furnace in Belval, scheduled to become operational by the end of 2025. This facility is expected to increase Luxembourg’s crude steel production capacity by 15% of the annual tonnage, enabling the country’s sites to meet the demand for finished rolled products autonomously.
The company also outlined plans for a dust extraction system at its Differdange plant, capable of filtering 1.2m cubic metres of air per hour and reducing diffuse dust emissions by up to 80%. This installation is due for commissioning in early 2026 as part of broader environmental mitigation efforts.
Additionally, ArcelorMittal commissioned a photovoltaic installation at its European Logistics Center in Hanoboesch in the first quarter of 2025. The solar array comprises over 8,600 panels spanning 75,000 square metres of roof space, with an expected annual electricity output of 4,600 MWh. A similar renewable energy project is underway at the Belval site.
Massin emphasised the company’s objectives amid a competitive and increasingly regulated market. While acknowledging current challenges in the steel industry, she highlighted, as foundations for future growth, the strength of ArcelorMittal’s product portfolio, the expertise of its teams and ongoing facility upgrades.
“The future of our Luxembourg steel industry indeed depends on the common will to develop responsible steels that promote a continuous reduction of CO2 emissions, a serene coexistence with residents living near our facilities and an industrial activity favourable to the influence of the grand duchy,” Massin said.
