Repairing, maintenance and overhauling of (a,b) 2 no 200 amp, 550v, star delta er and (c,d) 2 no 150 amp, 550v, dol starter for motor and (e) 2 nos of 300a acb switches at dhori (k) colliery.

Complete repairing of prabhu make star delta starter 200hp 550 volts 3 phase sl. no.- 2907 at chandmari colliery.

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.

Repairing of sd-15 star- delta starter kilburn make, 550v at 9 seam jogidih colliery, sl. no. jc/sd/10 under govindpur area

Repairing of (a) nflp dol er 3.3 kv, 180 kw, ctr 60/5, make prabhu, sl. no. ht9007 (b) nflp dol er, 6.6 kv, 370kw, make sait mineline, sl. no. sa1451 and (c) nflp star delta starter 550 volt make l and t type ml 10f under pnd ocp, nk area

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 accessories of 1 no.

Complete repairing of volga make 200hp / 150kw 550 volts star delta starter sl no 7158 and gate end box mine line make starter 65hp/550 volt sl. no. 1642 of victory colliery under bastacolla colliery.

Complete pump repairing of volga make star delta starter 200hp 550 volts 3 phase sl. no flp 7453 for 9 pit chandmari colliery

(a)complete repairing/ overhauling of 600 amps 550v/600v crompton parkinson make sl.no. 5006a (b) partial repairing/ overhauling of 525 kw 3.3 kv nflp vcb star-delta-starter sl.no. ht-736 of amal.nt-st-jg ocp under lodna area

Complete repairing/ rewinding and overhauling of pullen make 210 h.p.550 volt 2900 rpm p-16 submersible motor and p-260 five stage pump sl.no. pp-380048 local id. no. lc/subm/03 at lodna colliery of amal. joyrampur colliery under lodna area.