Lack of transparency and lost capital are a lesson for junior mining investors.

The global miner completed the debottlenecking work at the port at its Western Australia operations, boosting iron ore output.

Peru produced more in August largely thanks to Glencore's Antamina, which produced 26.5% more of the red metal year-on-year.

Net proceeds will be used predominantly used towards furthering exploration at the 100%-owned Lunahuasi epithermal project.

The miner is investigating the cause of the fire at a sulphuric acid unit at Freeport's Manyar site.

It said an expansion at Carlin mine, completed during a shutdown in the third quarter, would support higher throughput and recoveries in the last quarter of the year.

The company, one of the world's largest iron ore producers, reported output of 90.97 million metric tons in the three months through September.