Repairing Of One No. 3.3 Kv Grade 400 Amps Long N Coford Make Ocb Pnm No 63 For Control Of Feeder Installed At D.D. Mines Substation Under Bokaro Colliery/Pe(Enm)/Bokaro/ E-Tender/22-23/ 6/2022_Ccl_244766_1 (EXPIRED)