NEW DELHI, July 16 – As the first light of day breaks, Ramu Gupta hoists a blue bag over his shoulder and makes his way to the Yamuna River, driven by hope and necessity. At 67 years old, Gupta is among the many "gotakhors"—local divers—who search the waters for coins, metal scraps, old bottles, and small objects they can sell at Delhi’s thriving recycling markets. “I make around 5,000 rupees ($58) a month from this,” said Gupta, who also works as a toilet cleaner next to his modest