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 July 12 accident.

Based on the probe by a panel appointed by the DMRC, he further said the design consultant, Arch Consultancy Services, has been blacklisted for five years, while the structural consultant, Tandon Consultants, which did not give 'correct advice' to DMRC, is being debarred for two years.