Tanco Terminals is constructing a $8.2 million expansion of its liquid tank farm at Ports of Indiana-Burns Harbor to support growth in Lake Michigan shipments. Tanco is a third-generation, family-owned business operated at the port since 1977.The company stores and performs value-added services for liquid cargoes, from petroleum to food-grade oils.As part of the expansion, Tanco is adding a sixth rail loading track, a new truck scale, three storage tanks – two with 36,000-barrel capacity and a third at 42…