In 1840, the Government took a keen interest in geology and mineral resources, and this led to an additional grant of Rs 250 per month for the geological section alone. In 1851 when the Geological Survey of India came into being with the advent of Sir Thomas Oldham, a rented building at 1, Hastings Road now K N Roy Road, the present site of the New Secretariat became its office. The geological collection of the Government of India 'Museum of Economic Geology' at the Asiatic Society, were then transferred to this site in 1856. The Asiatic Society geological collection were however held back with the condition that it would be handed over to the GSI once a Museum for all its collection came into being. It was way back in 1837 that Sir James Princeps, then-Secretary of the Asiatic Society, had written to the Government asking for a Museum paid for by the state. A movement for a full-fledged Museum was thereafter keenly pursued over a decade, and later, with Sir Thomas Oldham, then Superintendent of the Geological Survey of India, at the helm, it gained momentum.