New Delhi, July 28 - Delhi Metro chief E. Sreedharan Tuesday said all their projects would be completed before the Commonwealth Games next year despite a major accident this month and the discovery of cracks in pillars.

'The mishap and the cracks seen in the pillars will not have any delay whatsoever on the overall completion of the Delhi Metro projects. We will be able to complete the work on all sections comfortably before the Commonwealth Games in 2010,' Sreedharan said at a press conference.

Sreedharan also said that construction major Gammon India has been given a showcause notice and may get blacklisted for a period of two years for the Metro accident July 12. That day, an under-construction elevated section of Delhi Metro in Zamrudpur in south Delhi collapsed killing six people and injuring 15.

Gammon India is the contractor of the Central Secretariat-Badarpur line where the accident occurred. It is also in charge of building the Yamuna Bank-Noida stretch of the Delhi Metro.