Jee bilkul, dhn-prka-asn toh shayad late 50's se hi electrified tha, toh humesha loco change wagera is region mein hota hi tha
Despite electrification dhn had its fair share of diesel locos as aaspaas utna electrification nhi tha
I think the jharia waali line never got electrified?
Bksc got electrified in the late 80's, my earliest railway based memory is waiting for 8624...
more... at pf1 of bokaro, bksc k baad electrification toh 2000s tk nhi hua tha, and bokaro mein 20 min rukti thi pnbe hte for loco change
Crp gmo line I guess 1930's se h uske bawajud bhi some trains went to dhn, loco reversal k liye
Dhn's capability to support loco reversals over the years has immensely deteriorated
Bbs rajdhani via asn dhn thi, purushottam bypassed bksc until very recently
It's amazing how much things have changed in these 25 years