(a) Dismantling And Erection Of 3.3 Kv Overhead Line In O Seam And Prabhu Feeder At 6 No.sub-station And (b) Dismantling Of 3.3 Kv And 440 Volt Overhead Line And Erection Of 3.3 Kv Overhead Line At 9/6 No. Siding Of Amal.nt-st-jg Colliery Under Lo