 In 2000, the open-pit mines at Viivikonna, Sirgala and Narva were merged into the single Narva open-pit mine.The exhausted Aidu open-pit mine was closed in 2012, followed a year later by the Viru underground mine.In 1999, Government of Estonia handed 51% of shares of Eesti Põlevkivi to Narva Elektrijaamad.