Dc of twin tunnel by shield tbm, cut and cover tb, underground ramp and four underground and balance work of nk station with entry/exits including retrieval/ls, af, ws..si and dw..of inderlok-indraprastha corridor of delhi mrts project of phase-iv.

Cleaning, collection and transportation of spilled coal and coal dust from horizontal belt, big inclines belt, engine room and different chutes of gas plant to coal yard for unloading

Comprehensive annual maintenance contract for biometric face recognition attendance devices of substations (including garbeta and kalyani) and rhq in erts-ii f or 02 years