Limestone in V4 countries.

The article is dealing with the issue of limestone in V4 countries, in the countries, Slovakia, the Czech Republic, Poland and Hungary. The limestone is intensely mined because it has a multilateral use: it serves as gravel, building stone, peculiarly coloured varieties are used as a decorative stone; the largest quantity is consumed in the production of cement and lime. In the metallurgy, limestone (high percentile) is an important slag-forming additive; in confectionery is the source of necessary CO2. At the beginning of the article, are analysed the general properties, formation and composition of limestone. It is followed by mining and preparation and processing of limestone. In the part of the article dealing with production, are parts focused on the production of V4 countries, but also part dealing with the production of concrete products and their use in the industrial sectors. Data collected about export and import of the limestone led to the acquisition of business analyses and the creation of maps for better visualisation of acquired knowledge. In the article are processed data of limestone, its production in V4 countries and export and import, which were statistically processed and evaluated by the test Wilcoxon /Kruskal-Walis. As can be seen from the collected data and its processing, the business has a local character. The biggest producer is Poland, followed by the Czech Republic, Slovakia and Hungary. Biggest exporter of the limestone is Poland; the biggest importer is the Czech Republic. [ABSTRACT FROM AUTHOR]