For Rio, a deal with Glencore would also bring a commercial advantage. Glencore operates one of the most powerful commodity marketing and trading businesses in the mining sector, giving it deep exposure to physical flows, regional pricing differences, and supply disruptions. Integrating that operation would add a capability Rio currently lacks, strengthening its position across copper and other metals markets.The talks also come as the mining sector accelerates its push toward consolidation. Producers are s ...