The Indian government will request Australia to take measures to ensure steady supplies of coking coal, four sources said, as part of efforts to help steel mills reeling from falling supplies and rising prices of the key raw material in steel-making. Nagendra Nath Sinha, the most senior official at India's federal Ministry of Steel, will meet Philip Green, Australia's high commissioner to India, and the two sides are likely to discuss India's need for coking coal, said the sources, who included two Indian government officials and two industry executives.