Coalfield Express

{{short description|Train in India}}

{{Use dmy dates|date=January 2016}}

{{Use Indian English|date=January 2016}}

{{Infobox rail service

| name = Coalfield Express

| image = Ministry of Railways India.svg

| caption =

| type = Superfast

| status =

| locale = West Bengal & Jharkhand

| first = {{start date and age|df=yes|1955|03|01}}

| operator = Eastern Railway

| ridership =

| start = {{stnlnk|Howrah}} (HWH)

| stops = 11

| end = {{stnlnk|Dhanbad}} (DHN)

| distance = {{convert|259|km|0|abbr=on}}

| journeytime = 4 hrs 35 mins

| frequency = Daily

| class = AC Chair Car, Second Class Seating, General Unreserved

| seating = Yes

| sleeping = No

| autorack = Overhead racks

| catering = On-board catering,
E-catering

| observation = Large windows

| entertainment =

| baggage = Available

| otherfacilities = Below the seats

| stock = LHB coach

| gauge = {{track gauge|1676mm}}

| trainnumber = 12339 / 12340

| speed = {{convert|56|km/h|0|abbr=on}} aerage including halts.

| maintenance =

| map =

| map_state =

}}

The 12339 / 12340 Coalfield Express is a daily superfast train that connects the major coal and industrial city of Dhanbad, Jharkhand with the adjoining coal and industrial cities of Asansol, RaniGanj, Andal, Waria, and Durgapur with the capital city of West Bengal, Kolkata. This train is also known as the twin / sister train of the Howrah – Dhanbad Black Diamond Express.{{Cite web |last=Thakur |first=Jishnu |title=12340/Coalfield Express - Dhanbad to Howrah ER/Eastern Zone - Railway Enquiry |url=https://indiarailinfo.com/train/-train-coalfield-express-12340/332/378/1 |access-date=2024-04-21 |website=indiarailinfo.com}} Initially running as 3029/3030, the train was converted to superfast on 3 June 2006, since when it has been running as 12339/12340.