LONDON—Globally diversified miner Anglo American PLC said Thursday it will incur $3 billion to $4 billion in write downs in the first half of this year related to its Brazilian Minas Rio iron ore project and certain Australian coal assets as a result of falling commodity prices.

The world's fifth-largest diversified miner by market capitalization said it has decided to report the noncash post-tax impairment charges after taking into account "significant further weakness and ongoing volatility in the prices of the bulk commodities, particularly iron ore and metallurgical coal," during the first half of the year. The company is due to report its first half results next Friday.

The FTSE 100 miner has been restructuring its business in bid to lift its shares, which last week hit a near 13-year low after commodities prices slumped due to slower-than-expected Chinese economic growth and a supply glut in many of the commodities it produces.

Anglo American also reported mixed second-quarter output across its commodities. Diamond output, its largest earnings driver last year, fell 6% on the year to 8 million carats in the second quarter, while iron ore output, its second-largest earnings contributor last year, rose 6% to 12.2 million tons following a ramp up of the Minas Rio iron ore project. Refined platinum equivalent output rose notably in the second quarter while copper and nickel output fell during the same period. Meanwhile export coal output also rose.

Write to Alex MacDonald at alex.macdonald@wsj.com

Access Investor Kit for Rio Tinto Ltd.

Visit http://www.companyspotlight.com/partner?cp_code=P479&isin=AU000000RIO1

Access Investor Kit for Anglo American Plc

Visit http://www.companyspotlight.com/partner?cp_code=P479&isin=GB00B1XZS820

Access Investor Kit for Anglo American Plc

Visit http://www.companyspotlight.com/partner?cp_code=P479&isin=US03485P2011

Subscribe to WSJ: http://online.wsj.com?mod=djnwires

Rio Tinto (NYSE:RIO)
Historical Stock Chart
From Mar 2024 to Apr 2024 Click Here for more Rio Tinto Charts.
Rio Tinto (NYSE:RIO)
Historical Stock Chart
From Apr 2023 to Apr 2024 Click Here for more Rio Tinto Charts.