TECK - Teck sells stake in Quebrada Blanca copper project to Sumitomo for $1.2B December, 04 2018 07:14 AM Teck Resources Ltd Teck Resources (NYSE:TECK) agrees to sell a 30% stake in its Quebrada Blanca copper mine expansion in Chile to Sumitomo (OTCPK:SSUMF, SMMYY]]) for $1.2B. More news on: Teck Resources Limited, Sumitomo Corp., Rio Tinto plc, Commodities news, Read more ...