The Gadgil committee submitted its report in March 1966. It recommended creation of regional planning boards for notified regions, starting with the Mumbai and Pune regions. To establish such boards, it also recommended passage of a Regional Planning Act. The Gadgil committee also recommended a planned decentralisation of industrial growth in the Mumbai region as well as the development of the mainland area as a multi-nucleated settlement. These multi-nucleated settlements, each 250,000 in population, were proposed as a series of nodes strung out along mass transit axes, self-contained, with respect to schools, commerce and other essential services, and separated from each other by green spaces.