At national level, Geological Survey of India carries out regional survey and exploration for minerals on an annual basis and estimates mineral resources in the country. In addition, all State level Directorates of Mining and Geology also do survey and exploration on a detailed basis. However, their information is not maintained by Government of India. Details of the mineral investigations carried out by Geological Survey of India.

In GSI, continuous efforts are being made to upgrade the technology and use state of the art equipment as per international standard for regional exploration of minerals. GSI is planning an extensive programme of modernization in the future on the advice of the Parliamentary Standing Committee and as per guidelines laid down by an Expert Panel on Modernization of GSI constituted by Ministry of Mines. Besides, the National Mineral Policy, 2008, has also emphasized that exploration and prospecting be maximized through scientific methods of mining, beneficiation and economic utilization.

GSI does not estimate mineral reserves. This work is undertaken by Indian Bureau of Mines. Based on the data obtained from various agencies engaged in detailed exploration and exploitation including State Government Agencies, IBM publishes the Indian Mineral Year Book annually.