Cement works comprise two inseparable elements: a quarry, where the raw materials are extracted, and a plant, where the raw materials are transformed. This transformation takes place during a highly strict physico-chemical process.     The limestone is extracted from the Aversa quarry by hewing the rock face. It is then crushed and transported to the plant.           The raw material undergoes several transformations in the plant. After being finely ground, it is dried and mixed with different complementary products, the result of which is a flour-like powder.     The powder is then heated in a kiln that can generate a temperature of up to 1450°C. It undergoes a decarbonatation process, followed by a mineralisation process, resulting in an artificial rock, known as clinker.           The clinker is then finely ground and mixed with new components, such as gypsum or slag, which are used to produce different grades of cement.