One of the world's biggest miners is about to go coal free

Just five years ago it would have been almost unthinkable that one of the world’s biggest mining companies would not dig any coal. It’s now likely to become a reality. Rio Tinto Group, the world’s second-largest miner, has been steadily backtracking from coal to focus on better assets. It’s now looking for buyers for its remaining coal mines in Australia, and a sale will mark a complete exit from the fuel.