India has tested a crawler-mounted mobile seabed mining system that can go up to 400 metre deep as part of its ambitious programme to scour the depths of the oceans to extract strategically and
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/india-tests-worlds-first-mobile-seabed-mining-system
[2] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining