Rolf Maier Bode Competitors

Every day, people around the world live, work and play on ground prepared by Keller, the world's largest geotechnical specialist contractor. Used alone or in combination, our techniques solve a wide range of challenges across the entire construction sector – from industrial, commercial and housing projects to infrastructure construction for dams, tunnels, transportation and water treatment, as well as projects to address environmental challenges. Global strength and local focus are what makes us unique. Our knowledge of local markets and ground conditions means we’re ideally placed to understand and respond to a particular local engineering challenge. Our global knowledge base then allows us to tap into a wealth of experience, and the brightest minds in the industry, to find the optimum solution. With around 10,000 employees and operations across five continents, we have the people, expertise, experience and financial stability to respond quickly, get the job done and see it through safely. By connecting global resources and local knowledge, we can tackle some of the largest and most demanding projects around the world but the everyday work we do is just as important and, in total, we tackle an unrivalled 6,000 projects every year.

In around 60 countries across the world, HeidelbergCement stands for competence and quality. In the 140 years since its foundation in 1873, HeidelbergCement has grown from a regional cement manufacturer with one plant in Heidelberg to one of the world’s leading building materials groups. With the acquisition of Italcementi, HeidelbergCement is the number 1 producer of aggregates, the number 2 in cement, and number 3 in ready-mixed concrete worldwide. The enlarged Group has activites in around 60 countries with 58,000 employees working at more than 3,000 production sites. HeidelbergCement operates 156 cement plants with an annual cement capacity of 194 million tonnes, more than 1,700 ready-mixed concrete production sites, and over 600 aggregates quarries. Legal Notice and Privacy Policy: https://www.heidelbergcement.com/sps

Driving innovation for excellence – that’s what PORR stands for for more than 150 years. With around 21,000 employees and a production output of around EUR 6.8 bn (as at 31.12.2025), it is one of the leading construction companies in Europe. As a full-service provider, PORR offers holistic construction solutions from planning and construction to operation, covering the entire construction value chain in building construction, civil engineering and infrastructure construction. PORR focuses on its home markets Austria, Germany, Switzerland, Poland, the Czech Republic, Slovakia and Romania. On selected international project markets such as Norway, the UK, Italy, the Benelux countries and Qatar, PORR contributes its expertise together with local partners, particularly in tunnel construction, railway construction and specialist civil engineering. The PORR share is listed on the Vienna Stock Exchange.