Trenching, supply & laying of cables, Foundation/ Erection/ wiring of location boxes, signal post, Erection & wiring of relay racks, installation, wiring & testing of IPS, LC gate, supply, wiring & testing of MSDAC/ SSDAC and supply/ Installation/ testing/ commissioning of new distributed Electronic Interlocking at WADSA station, Centre EI building & one end Goomty & Centralized Electronic Interlocking at ARMORI, KONDHALA & GADCHIROLI station of Nagpur division of SEC Railway.