Delhi Metro's eight-year run1. October 1998 Construction of Delhi Metro begins.

Former Prime Minister Atal Bihari Vajpayee
2. December 2002 Delhi Metro inaugurated by Prime Minister Atal Bihari Vajpayee
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3. July 2009 An accident at a construction site kills six people, injures 15
4. April 2010 Delhi Metro carries a million passengers in a single day for the first time

Delhi Metro's Managing Director E. Sreedharan
5. December 2010 Delhi Metro completes eight years. Managing Director E. Sreedharan's term extended by a year.
-T.V. Mahalingam