Munich/Luxembourg, November 5, 2007 – Two leaders in different industries have agreed on a close cooperation: ArcelorMittal as the number one steel producing company and Nemetschek AG as the leader in software for design, construction and facility management. Nemetschek will implement part of the ArcelorMittal predesign software in its integrated program suites for modeling, designing and detailing structures. Both companies want to stimulate innovation in the construction industry, in continuous search of cost-effective solutions and productivity enhancements. ArcelorMittal, through ArcelorMittal Steel Solutions & Services and the Commercial Sections division, is leading in material improvements and building components based on the use of steel. Nemetschek is leading in software technologies in construction: from Design2Cost, Round-trip Engineering through to automated fabrication and project management.

Through integrating pre-design software tools, by communication to the respective clients and interested professionals and by marketing activities both companies agree to work out campaigns for cross promotion of respective technologies. ArcelorMittal and Nemetschek will share technology on design, cost estimation and Eurocodes regulations.

“ArcelorMittal has extensive research know-how on detailed design methodologies for a variety of steel building parts, such as Cellular Beams, composite beams and floor systems which are of great practical use to the engineers wanting to design with them”, says Jacques Hoffmann, Manager of the Long Carbon Europe Research Centre.

Bruno Theret, head of Global Marketing BCS at ArcelorMittal, adds: “Transfer of knowhow promotes the best use of steel at the largest number of clients, architects, designers, steel contractors, worldwide. The international network of both companies ArcelorMittal and Nemetschek is a guarantee for reciprocal promotion and increased visibility. This partnership will enable Nemetschek's clients to have access to ArcelorMittal solutions and "niche products". It should also increase the use of steel in construction and generate added value for the whole steel branch."

“ArcelorMittal has made a preferential choice towards deploying the SCIA steel design software of Nemetschek for assisting its commercial branches that help the architects and engineers to adopt steel solutions in their projects”, quotes Dr. J.P. Rammant, head of the Nemetschek Engineering Group. ArcelorMittal recognises the superior quality of the Nemetschek design software for steel structures.

Mr. Ernst Homolka, CFO and spokesman of the Nemetschek AG Board, adds: “This cooperation is an example of how industry leaders can push technology innovations in a specific market such as construction. It will support the expansion of both companies into new regions and international markets.”

About ArcelorMittal

ArcelorMittal is the world's number one steel company, with 320,000 employees in more than 60 countries. The company brings together the world's number one and number two steel companies, Arcelor and Mittal Steel.

ArcelorMittal key pro forma financials for 2006 show combined revenues of USD 88.6 billions with a crude steel production of 118 million tonnes representing around 10 per cent of world steel output. One of its principal markets is the construction sector.

About Nemetschek

The Nemetschek Group is a leading international IT company in the AEC sector (Architecture, Engineering, Construction). The software company develops integrated solutions for the complete life cycle of buildings and real estate. The company’s products are currently used by more than 270,000 companies in 142 countries and in 16 languages to optimize the complete building creation and management process in terms of quality, cost and time. Nemetschek was founded in 1963 by Prof. Nemetschek and has more than 1,000 employees worldwide (2007).