http://www.mongoliaonline.com/Mining/mongolia-russia-copper-venture-2009-output-flat/ MOSCOW, March 10 (Reuters) - Mongolia's top mining company, Erdenet Mining Corp, produced 126,485 tonnes of copper-in-concentrate last year, practically unchanged from the 126,796 tonnes produced in 2008, the company said on Wednesday.   Erdenet said in a statement published on its website, www.erdenetmc.mn, that it processed 25.9 million tonnes ... Fri, 12 Mar 2010 21:15:11 EST en