In a significant breakthrough, the Geological Survey of India (GSI) has discovered two kimberlite bodies, primary source rocks for diamond, at Pillalapalle, about 10 km from Kayandurg town in
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/gsi-discovers-diamond-rocks
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-line-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining