Brahamputra Mail laterly known as Tinsukia Mail when it runs upto GHY giving mail to MG trains up to Tinsukia. After guage conversion its named as Brahamputra Mail extended to Dibrugarh.
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Assam Mail is now North East Exp. Later it runs between GHY-BJU on MG section and BJU-NDLS on BG section. After guage conversion its runs now between NDLS-GHY as North East Exp.