Construction materials
Increasing environmental responsibility is impacting construction technology and architecture. In particular, this affects the development and manufacture of all construction materials and extraction of the necessary raw materials.
![METZEN Industries - Baustoffe - Steine und Erden - Unterwasser Kiesgewinnung](https://metzen.org/wp-content/uploads/2022/02/Metzen-Industries-rz-Steine-und-Erden-15-02-2022_2.webp)
Stone and soil
The gravel extraction industry is faced with increasing challenges: whilst many mining sites are becoming more and more difficult to access, the demand for gravel as an important component of construction materials continues to grow.
![METZEN Industries - Zement](https://metzen.org/wp-content/uploads/2022/02/Metzen-Industries-rz-Zement-15-02-2022_2.webp)
Cement
The European cement industry employs around 35,500 people and has an annual turnover of roughly 15 billion euros, making Europe the 3rd largest cement producer in the world.