Mega block for Pre Non Interlocking & NI work to start from tomorrow in New Alipurduar & Samuktala Rd stations in connection with doubling of remaining potion of Alipurduar Bongaigaon section. All the passengers are requested to cooperate with NFRlys as massive delay of trains are expected for 5 days from tomorrow. Next doubling is New Alipurduar New Baneswar & New Baneswar New Coochbehar whixh will again take 5 days each later on