Concession of the Ilindentsi Field, Central 1 Section
There is also a concession for Vratsa limestone at Cremona Field, which is not currently used (the term of the concession is 25 years). Collaboration with Ilindenski mramor for gneiss quarries and barite. Details of the EU project: Contract No. BG16RFOP002-1.001-0052-C01, Project name: Integration of Innovative Production Processes in Ilindenski mramor Ltd.