Numaligarh Refinery Limited (NRL) has achieved a milestone by successfully executing one of the longest Horizontal Directional Drilling (HDD) projects in the Subansiri River, connecting Lakhimpur and Majuli in Assam, as part of its crude oil pipeline project. The project is a part of the 'Numaligarh Refinery Expansion Project (NREP)', which involves laying a 1,635km pipeline from Paradip Port in Odisha to Numaligarh in Assam, alongside expanding the refinery's capacity from 3.0 MMTPA to 9.0 MMTPA.