 Minto Metals Corp TSX-V:MNTO says it has struck a more favourable offtake deal for copper concentrate from its Yukon mine with Japanese trading titan Sumitomo Corporation SC. The deal, effective from May 16 this year, extends the existing arrangement between the two parties and means SC will purchase all the copper concentrate produced at the Minto mine for an additional four years based on 50,000 dry metric tonne dmt per year of production. 