People wait for job opportunities in front of the building of National Employment Service in Mariana, Brazil. Picture taken March 9, 2016. The historic town of 60,000, built on gold mining during the Portuguese colonial era, relies on the red iron ore in the surrounding hills for nearly 90 percent of its revenue. Since the mine closed four months ago, the line at the unemployment agency has lengthened steadily as those looking for jobs surged from 300 to 1,900. It could grow longer still if Samarco starts to lay off its 3,000 direct employees. REUTERS/Washington Alves