The plant in Kerkosand in Slovakia has belonged to the Quarzwerke Group since 2001.
The fossil dune sands date from the Quaternary period, to be exact from the 'Würm' period. The deposit in Sajdíkove Humence is therefore the most recent deposit of the group. Produced are sands that are used in particular in the Slovakian and Czech foundry, glass, construction, construction chemistry and other industries. The typical round grain shape and high degree of homogeneity are the characterizing features of all of the sand grades from Sajdíkove Humence.