Rio launches new $1.9bn buy-back

FTSE 100 miner Rio Tinto has launched a $1.925bn (£1.44bn) share buy-back, after having completed an earlier $1.5bn buy-back. Rio said the two transactions allowed it to return the proceeds of its Coal & Allied sale to shareholders. In 2017 it has returned $8.2bn in cash to shareholders, both in dividends and buy-backs.