Construction of an experimental „pilot“ facility for technology testing of flotation processing of copper, lead and zinc ore on the territory of Karamanica, municipality of Bosilegrad, Republic of Serbia

Notification from Ministry of Agriculture and Environmental Protection of Serbia (No 04-00-1898/22.08.2016)

Response from Ministry of Environment and Water of the Republic of Bulgaria (No 99-00-161/11 Oct. 2016)

-Remainder Letter from Ministry of Environment and Water of the Republic of Bulgaria (No 99-00-161/ 22 November 2018)