One of the oldest construction materials widely used in the road construction, making of dry mixtures, ready-mix and various construction elements. Depending on the content of sand in the quarry, it is divided into fractions and crushed accordingly to type of use.

Manufactured in SCHWENK Latvija quarries in Praviņas, Degole parish, Krūziņi, Smārde parish, Kļaviņi, Mārciena Parish and Kurzeme, Lauciena parish.