• National Environment Monitoring System, Subsystem "Bowels of the Earth"

• Annual technical projects for exploration, extraction and preliminary manufacturing of subsurface resources

Ministry of Environment and Water
Regional Inspectorate of Environment and Water - Plovdiv

• Register of Quarry and Extraction of Construction Materials
  Information forms for Subsystem “Bowels of the Earth”

Ministry of Environment and Water
Regional Inspectorate of Environment and Water - Smolyan

• Data of the information masses and resources for the component - Bowels of the Earth