BANTARGEBANG, Indonesia — Long before dawn breaks over Indonesia ’s largest landfill, Nur Wencih joins thousands of waste pickers climbing mountains of garbage, searching for anything they can sell. The 35-year-old widow has worked at the site on Jakarta’s eastern edge for two decades, following her parents, who still earn a living there. The Bantargebang landfill has paid for food and rent while helping her two teenage daughters living with a relative in a rural village. She hopes her daughters will never have to follow the same path. Living alone in a rented room near the landfill, Wencih earns about 200,000 rupiah ($12) on a good day collecting discarded toys, cardboard and plastic bottles before bulldozers bury them beneath fresh waste. Occasionally, she finds gold jewelry. “It feels like hitting a jackpot,” Wencih said while taking a break from the sweltering July heat. But those lucky finds, and perhaps her livelihood, may soon become far rarer. Beginning Aug. 1, Indonesia plans to start transforming the site from open dumping to a more controlled system as part of a natio