Removal Of Broken Bolts Of Swing Circle And Replacement Of Complete Swing Circle Bolts Of Be-1000 Shovel, Sl. No.- G-10122 Of Amp Colliery./Bccl/Ba/Exc/E-Tender/22-23/ 127/095 Date-30.09.22/2022_Bccl_258038_1 (EXPIRED)