Corrigendum : Supply And Installation Of 02 Nos. Of Ngr 3.3 Kv, 10amp , 190 Ohms For 02 Nos. Of 3 Mva Transformer 11kv/3.3kv Transformers At Main Sub-station Of Gidi-c Colliery Along With Maintenance , Repairing And Painting Of 3.3kv Overhead Line Poles At Gidi C