Mumbai: A month after the first phase of Metro 3 between Aarey JVLR and Bandra Kurla Complex was thrown open to commuters, the overall ridership on the line has surpassed the 600,000-mark. Mumbai's first underground Metro Line 3, the aqua line's phase-1, from Bandra-Kurla Complex to Aarey, became operational for the public in October. According to estimates drawn up by …