Tesla and high-volume nickel miner BHP are looking to come to terms in a deal that would see the mining company supply vast amounts of the metal to the electric automaker for EV batteries.

Bloomberg reported on Tuesday that sources familiar with the matter know that BHP and Tesla are currently in talks, but the main hold up is pricing. No final agreement has been made according to the sources, who wished to remain anonymous.

BHP is a world leader in the mining operations of coal, copper, iron ore, nickel, petroleum, and potash. The company’s only Nickel mine is located in Perth, Western Australia, known as “Nickel West.”