Washington has expanded an initiative to promote mining of lithium, cobalt and other minerals in resource-rich countries.

The years-long evaluation of and legal battle over Dominga has drawn criticism from the business community and conservative politicians.

Despite successful efforts to manage water usage more efficiently, tougher environmental rules are increasing miners’ costs and risks, particularly those operating in arid regions or close to populated communities.

The truck is expected to improve the safety of operations at mine sites.

BHP favours an internal hire, but is also open to external candidates, people familiar with the matter said.