Thousands of people gathered in the Romanian capital Bucharest and other cities on Sunday in a show of opposition against the Rosia Montana project in Transylvania
It is the third such attack on Cerrejon infrastructure — a joint venture between Anglo American, BHP Billiton and Xstrata — this year and follows seven incidents in 2012.
The up to 300,000oz per year Dvoinoye mine, located in Russia's Chukotka region, near the company's Kupol operation started commercial production in October.