Memoirs of the Geological Survey of India, Volume LXIV: Part 1, Barytes in the Ceded Districts of the Madras Presidency; Part 2, Asbestos in the Ceded Districts of Madras Presidency, with Notes on Its Occurrence in Other Parts of India (1934)

Volume LXIV of the Memoirs of the Geological Survey of India, published at Calcutta in 1933-34. Both parts are by A. L. Coulson. Part 1 (1933) covers barytes in the Cuddapah, Anantapur and Kurnool districts. Part 2 (1934) is a full memoir on asbestos. It describes chrysotile in serpentinised Vaimpalli limestones next to dolerite sills, chiefly around Brahmanapalle, Ippatla and Lingala in Pulivendla taluk. It says asbestos there was found in 1924 in a well at Lingala and later mined by the Mysore Asbestos Mines, Ltd., employing several hundred villagers. Part 2 also surveys deposits elsewhere in India and in Afghanistan, Baluchistan and Persia. Further chapters cover the origin of asbestos, its varieties, uses, mining methods, prices, and production, export and import statistics. It ends by weighing the prospects for an Indian asbestos-products industry.