CEO Andrew Mackenzie said it was too early to say what impact the recent Vale tailings dam disaster will have on efforts to restart BHP and Vale's jointly owned Samarco mine, shut since November 2015 after a dam collapse killed 19 people.
The company says it has seen a significant improvement over the past year, with prices up about 20%, but believes conditions are not where they need to be to restart idled capacity.
Mining companies now need to determine how to operate in a market that is characterized by rising stakeholder demands, a widening talent gap, as well as dwindling access to key inputs such as energy and water, says Deloitte in its latest annual report.