(a)complete repairing and overhauling of one(01)no.h.t.switch 11 kv 400 amps make g.e.c. sl.no. 12636 local id. no.jl/sw/11 at 2 pit (b) complete repairing / overhauling of one(01) no.ocb switch 11 kv 400 amps.make biecco lowrie sl. no. 116-1956 loca

Bevel pulley, ci, 5 in, 7.355 in, rpe size 22mm,segment, ci, 6 x 3 x 33 in, f--voldrum hlg,planetory pinion teeth,motor pinion 15 teeth,isolator 3.3 kv, 400 amps on off complete,thermal overload relay

Complete repairing and overhauling of gec make lt ocb 400 amps, 550 v si no- 30/1538 at langri more of docp under cv area.

Repairing of 3.3kv, 400-amps, crompton greaves make ocb type-alai/xl, s.no.32087g of poidih sub-station, 11kv, 400-amps, crompton greaves make ocb type-alai/xl, s.no.23821g of poidih sub-station and 400-amps , 550-440v, gec make type -k3, s.no.sdp/pn

Complete repairing and maintenance of gec make ocb 400 amps, 550 v si no- 30/2049 at enm section of docp under cv area.

Complete repairing of 400 amp 11kv ocb with busbar crompton parkinson make sl. no 15484 at bokkapahari sub station of under rocp/sj.

Complete repairing and maintenance of gec make lt ocb 400 amps, 440 v si no- 30/2525 kkc main siding under block-ii area

Repairing 400 amp 11kv ocb with busbar crompton parkinson make sl. no 16484 at ebc sub station of aebsc.

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.

Repairing of 400 amps, 440v crompton parkinson make ocb switch s no 76665 for controlling of lighting line kkc main siding of abocp mine under block-ii area