A woman holds a placard that reads: "Save Rosia Montana, now or never", during a demonstration in Bucharest, against the government's support for a plan to open a open-cast gold mine in Rosia Montana, September 1, 2013. REUTERS/Radu Sigheti
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UPDATE: This story has been edited to reflect the Romanian government's 25 per cent stake in the mining project. It also adds a citation to an estimate of the country's economic gain from the mine.
A project that would use cyanide to mine gold and silver has prompted thousands of Romanians to protest.