ISO 9001:2015 and ISO 14001:2015 Certified
Thiru T.P.Vinodkumar, Chief Vigilance Officer, Chennai Metro Rail Limited, Admin Building, CMRL Depot, Poonamallee High Road, Koyambedu, Chennai – 600 107. Phone : 044 – 23792000 FAX : 044 – 23792200 Email : cvo@cmrl.in