Lifting operations on the Delhi metro were thrown into the spotlight last month after the project suffered two major accidents in two days.rnSix people died when a concrete viaduct section collapsed on 12 July.rnThe accident occurred where a steel cantilever was being raised to lift a 3oot prefabricated concrete bridge segment.rnThree truck-mounted cranes then collapsed while trying to lift a steel girder on the following Monday, but without injury.
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