Black Diamond Express

Black Diamond Express (हिन्दी:- ब्लैक डायमंड एक्सप्रेस) is a super-fast mail-express train of Indian Railways, with effect from 1 July 2013, connecting Kolkata with Dhanbad. It is a day train and covers 271 kilometres (168 mi) at an average speed of 57 km/h (35 mph). It has AC chair car, second-class sitting, & general type of coaches. All classes except general class require prior reservation, whereas general coaches can be boarded with a general daily ticket. No pantry car is available in the train. The Tatkal scheme is available in this train.

Black Diamond Express ब्लैक डायमंड एक्सप्रेस

(Dhanbad-Howrah) Black Diamond Express
Overview
Service type	Superfast
Locale	West Bengal, Jharkhand
First service	Howrah railway station
Last service	Dhanbad Junction railway station
Current operator(s)	East Central Railways
Route
Start	Howrah(HWH)
Stops	14
End	Dhanbad(DHN)
Distance travelled	271 km (168 mi)
Average journey time	4 hours 55 minutes
Service frequency	Daily
On-board services
Class(es)	CC Class, 2nd sitting, General
Seating arrangements	Yes
Sleeping arrangements	No
Auto-rack arrangements	No
Catering facilities	No
Technical
Rolling stock	ICF coaches
Track gauge	1,676 mm (5 ft 6 in)
Operating speed	61 km/h (38 mph) average with halts

Major stations through which it passes are Seorapheuli Junction, Bandel, Barddhaman Junction, Durgapur, Andal, Asansol etc..

It is hauled by a WAP 7 locomotive of Howrah loco shed. It is the twin train of the Coalfield Express, which runs from Dhanbad to Howrah as well. However, it runs through the Howrah-Bardhaman Main Line while Coalfield Express goes through the Howrah-Bardhaman Chord line. It is an important train, and runs during the office hours, hence it receives a high priority run.

As such, the train serves as a link between towns such as Bandel, Seoraphuli, which are located on the main line with industrial centers Durgapur, Asansol, Dhanbad and Bokaro (via-Dhanbad) and the metropolis of Kolkata.