The Central Mine Planning and Design Institute (acronym CMPDI)[3] is a fully owned subsidiary of Coal India Limited, engaged in the field of environmental engineering and provides consultancy and engineering services across the globe. It is a public sector undertaking under the Government of India and is rated as a Schedule-B and Mini Ratna-II company.

The Central Mine Planning and Design Institute Limited was established in 1974, under Coal Mines Authority Limited (CMAL) (former name of Coal India Limited), out of the planning division of now-defunct National Coal Development Corporation (NCDC) as a single window set up to consolidate all aspects of Indian mining industry under one roof. Subsequent to the nationalisation of coal mining in India, CMPDI was reconstituted as a public sector undertaking in 1975.

The company has its headquarters in Ranchi, Jharkhand and is involved in mineral exploration, resource evaluation, resource management, mining geology, hydro-geological and geophysical studies and engineering geology investigations. It is an ISO 9001 accredited company and was rated as a Mini Ratna (Category II) company in 2009.

CMPDI is qualified to offer consultancy services in the fields of environmental engineering such as open pit and underground mine planning and design in coal, lignite and other minerals. The Institute is active in geological exploration, geological, geotechnical and allied support, mine planning and design, environmental management and training services.[6]

CMPDI has regional institutes (RIs) at Asansol, Dhanbad, Ranchi, Nagpur, Bilaspur, Singrauli and Bhubaneswar to extend its coverage nationwide[7] and has various field units and exploration camps.