Labor tensions are ratcheting up again in Chile

Results suggest that exploration and building remains the riskier but potentially more cost-effective alternative

They are focusing on the Planalto project, located near Vale's Sossego copper mine and Oz Minerals Antas copper mine.

The company shares the same core management team as Regulus Resources and is focused on projects in Argentina.

The Zaldívar copper mine in Chile, a joint venture between Antofagasta and Barrick, will be able to replace greenhouse gas emissions equivalent to 350,000 tonnes per year, or about 87,000 vehicles annually.

Power restoration has started but it will be gradual.

The Zonia Copper Oxide Project is located in central Arizona and has been held under private ownership for almost 100 years.

Next steps include ranking its list of targets for near-term scout drilling.

BHP had promised to return all of the net proceeds from the $10.8 billion sale of its U.S. shale business to shareholders when the deal was announced in July.

The Z87 pit ultimately ran 350 metres deep and had a strike length of about 900 metres.