Director: Dhiren Saha; Cinematographer: Sailaja Chatterjee, Durga Raha; Editor: Subodh Roy, M. Chakravrti
Summary: 'Black Diamond' or what is more commonly called coal, is an important factor in the working of modern industry. India is one of the leading coal-producing countries of the world and the Government of India is now taking energetic steps to mechanise the coal industry. The documentary gives a graphic account of the progress made in this sphere.
Cast & Crew:
Commentary Spoken - Ramesh Thapar
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