A man stands in a river in Abangeres, north of San Jose, December 9, 2009. The river is contaminated by mercury wastes from artisanal mining, according to Governor of Abangeres Jorge Calvo and published reports. Costa Rica is pushing to legalize a 600 informal miners of small-scale miners who scrape out tiny amounts of gold from abandoned mine shafts using dangerous and polluting techniques. Picture taken December 9, 2009. REUTERS/Juan Carlos Ulate (COSTA RICA - Tags: ENVIRONMENT SOCIETY)
REUTERS/JUAN CARLOS ULATE