Data of Inventory of Quarries provided by Jan Evangelista Purkyně University in Ústí nad Labem: Peterková M. T. (2015): Digitalizace Soupisů lomů ČSR/ČSSR. Bachelor thesis, Faculty of Environment, UJEP, 56 str., supervisor: Ing. R. Pokorný. The data is owned by the UJEP.
It contains point data on objects listed in the publications Inventory of Quarries from 30.-60.of 20th century. The basic attributes are filled in, the positional accuracy corresponds to digitization from maps scans, mostly at a scale of 1: 75,000.
Created by digitizing of map scans that are included in the publications Inventory of Quarries and filling in basic attributes about the type of mining plant, its approximate size, character and identification data.