Jamie Smyth:

For more than a century, Western Australia has yielded a lucrative bounty for gold and iron ore miners. Now, a battery revolution driven by the transition to electric vehicles and energy storage systems is creating a rush to exploit its reserves of lithium, cobalt and nickel.
 On Wednesday BHP Billiton joined the party, revealing plans to transform itself into the world’s biggest suppliers of nickel sulphate — a key component in lithium-ion batteries that power electric cars.
 BHP is spending $43m on a new facility to produce 100,000 tonnes of sulphate per year and aims to start output by April 2019.