Maithon Dam was specially designed for flood control and generates 60,000 kW of electric power.

[4] Kumardhubi is the heart of coal belt, which gives rise to a number of Industrial opportunities in the area.

The area is also known for its British-era metal casting company "Kumardhubi Metal Casting and Engineering Limited (KMCEL)" that produced track sections used in underground mines and employed around 850 workers at the time of its closure in 1995.

Originally owned by Bird Company during the British era, Kumardhubi Engineering Works was taken over by the Bengal government and run till 1979, after which it was taken over by Bihar State Industrial Development Corporation.

It was renamed Kumardhubi Metal Casting and Engineering Limited in 1983 with the BSIDC and Tata Steel jointly running it till 1995.

The Kumardhubi unit is an integrated unit having Engineering and Design, Marketing and Product Support, Purchase, Manufacturing, Assembly and QA under one roof to provide customers a total solution from Design to Installation and Commissioning.

Kumardhubi is also the hub of old and used sarees, which are repaired, cleaned and polished, and are sent back to the market for re-selling.