Bharat Petroleum Corporation Limited · Hindustan Copper Ltd · Hindustan Zinc Limited · Oil And Natural Gas Corporation Limited · Hindustan Diamond Company Private Limited · The Industrial Development Corporation Of Odisha Limited · C API Tal Region Urban Transport · Indian Strategic Petroleum Reserves Limited · Industrial Promotion And Investment Corporation Of Odisha Limited · Bharat Aluminium Co Ltd · Odisha Rail Infrastructure Development Limited · Odisha Mineral Bearing Areas Development Corporation · Neelachal Ispat Nigam Ltd