Complete repairing/ overhauling (a) 350 amps sd-15 ocb switch kilburn make 440 volt with original sl.no. 0696 (b) 400/300 amps gec make ocb switch 550v with local id. no. jg/sw/400-300a /66 (c) repairing and replacing of defective accesories of 1 no.

Complete repairing of gec make, 400 amps, 550v, si. no. 30/2118, ocb switch at railway siding laikdih of dahibari colliery.

Repairing/overhauling of 2 no. of lt switch circuit breakers(i)lt switch ocb gec sl.no30/1491 400amps 440v/550v(ii)ocb gec sl.no.30/1527 400amps 440v/550v asbnc.(2) rep.of two nos. acb switch 400amp 440v sl.no.343 make kilburn (ii)ocb switch 200a

Repairing and overhauling of gec make 400 amps 550v ocb installed at sarpi sub station of shyamsundarpur colliery

Repairing and overhauling of a) gec make 550 v 440 v 600 amps ocb b) kilburn make 600 amps 550 volt ocb c) kilburn make 400 amps 550 volt acb d) abc make 400 amps 550 volt acb at nakrakonda kuamrdihi b colliery under bankola area.

Complete repairing rewinding of 400 amps 550v reyroll england make ocb switch of bankola colliery.

Complete repairing of one 400 amps 550v gec make ocb with busbar sl. no 30 1908 of bhowra north colliery.

Complete repairing and overhauling/safety protection of (a)400 amps 550 volts gec make ocb switch sl.no. bar/ocb/02 for power controlling lighting line of nunudih basti and bhuli type colony digwadih and (b) 400 amps 550 volts gec make ocb switch sl

Complete repairing and overhauling of 1 no 200a 550v kilburn make ocb switch for power controlling of kt sub-station lighting line switch at nt-st-ocp local id-jg/sw/ocb/550v/2 under lodna area.

Repairing of 400 amps gec make 11kv ocb (ht switch) at millinium incline shankarpur colliery under bankola area