Dr.l Koppalkar holds a PhD in Metallurgical Engineering from McGill University and is a certified six sigma green belt holder and has over 25 years of combined experience in plant operation, consulting engineering, and research & development; fifteen years of base metal sulfide flotation plant operations management, seven years of engineering/consulting and five years of mineral processing research and development. Specialised in gold gravity concentration/GRG-testing, pilot plant operation, gold gravity circuits auditing for optimization, Sunil has progressive operations experience in crushing, grinding, classification, gravity concentration, flotation and dewatering operations. Working in consulting firms he has completed successfully studies such as preliminary economic assessment, pre-feasibility, feasibility and detailed engineering projects on gold, copper, lead, zinc, iron ore, manganese, graphite and lithium minerals for domestic and international projects. His expertise includes designing flowsheets for optimal performance, Capex and Opex estimation, mineral processing plant equipment sizing and selection, metallurgical testwork design, coordination and supervision, request for quotes and bid preparation and analysis, liaison with equipment suppliers and manufacturers.