Everyone know that the Howrah - Kharagpur Track was part of constructing the Howrah - Bombay VT (Mumbai CSTM) Trunk Route that was opened to train traffic in 1900 (As per Wikipedia). Can anyone tell me that when was the Kharagpur - Bangalore Track built by IR and when did IR open and then electrify the entire HWH - KGP - SBc Route ? Thanks :-)