When comparing values and thresholds criteria for the mandatory
lists applied in the V4 countries, a detailed division of types
of projects, depending on resources, used in Slovakia should be
noticed. Such division enables easy and clear usage of the list of
projects. Additionally, the V4 countries have introduced threshold
values concerning the amount of output or production for quarries
and open-pit mines. In case of Poland, exploitation has been also
divided into underground and surface (open-pit) one. The applied
threshold values of the volume and the surface vary significantly
(Table 2, columns 3–6). The highest limit values of extraction of
rock raw materials have been set in Slovakia (over 200,000 t/year),
at the same time decreasing the surface of exploitation from 25 ha
to 10 ha