Corrosion in Mining and Mineral Industry G. Venkateswara Rao 1Dy. General Manager (Mineral Processing), R&D Centre, NMDC Limited, Hyderabad, India ... proactive approach to corrosion-control will struggle to take a foothold. ... in which it estimates the global cost of corrosion to be US$2.5 trillion, equivalent to roughly 3.4 percent of the