Kolkata: Satyendra Nath Tiwari has taken over as Director (Marketing) of Coal India Ltd. Tiwari has a rich and vast experience of over 33 years in marketing & sales. He has worked in various capacities since 1986 in Central Coalfields Ltd, Eastern Coalfields Ltd and Northern Coalfields Ltd before joining Coal India Ltd as General Manager (Marketing & Sales). A B.Sc. Engineering graduate with 1st class distinction from BIT MESRA, Tiwari also has to his credit an MBA with specialisation in Marketing which he completed from BIT MESRA.