A technician opens a pressure gas valve inside ONGC group gathering station 

A technician opens a pressure gas valve inside ONGC group gathering station on the outskirts of Ahmedabad
Reuters
A technician opens a pressure gas valve inside the Oil and Natural Gas Corp (ONGC) group gathering station on the outskirts of Ahmedabad March 2, 2012. REUTERS/Amit Dave/Files
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