i got this walk in interview at Bhubaneswar orissa in behalf of Dhenkanal site where its production site located. A written examination was conducted which basically contributed aptitude, reasoning and technical questions. which is not easy though. then after got confirmation of being selected i was called for an interview at kolkata corporate office. i at 1 on 1 with the HR. just after a little judgement and discussion i finally got selected and offered.