The works are located at Chittaranjan in the Asansol Sadar subdivision of West Bengal, with an ancillary unit in Dankuni.

[2] A survey of the proposed area began on 9 January 1948; the rocky soil was an advantage in erecting structural foundations, and the undulating terrain solved the problem of drainage for the township.

The production is expected to commence after the completion of construction and installation work which is estimated to take a period of about three years from the date of the signing of the Agreement.

The terms of the agreement are that we shall pay a sum of £1 lakh to the company with which we are collaborating, they will be responsible for supplying all the designs, supervision, advice in procurement of machinery etc.

; if it is purchased in England, they will be responsible for the inspection of the machinery; also generally, they are to help us in putting up the foundry and also to train up the necessary personnel.

The first Prime Minister of India, Pandit Jawaharlal Nehru, commissioned the first 1500 V DC Locomotive named Lokmanya on 14 October 1961.

CLW gradually began upgrading their locomotives to produce 6000 hp and achieve 160 km/h, and also started building the 25 kV AC/1500 V DC, AC/DC WCAM-1 series for hauling mail/express trains on the Western Railway.

The first WAG-9 series locomotive—the first indigenous 6000 hp freight electric locomotive—was rolled out on 14 November 1988, and christened Navyug.10 May 2000 Navodit, the first passenger version of the WAP-5 series with a service speed of 160 km/h and the potential to reach 200 km/h, was manufactured; the project's highest-priority items are the development of material sourcing, indigenization, and cost reduction.