Rio Tinto plc (LON:RIO) has pledged to achieve net-zero carbon emissions by 2050 and budgeted US$1bn in climate-related spend over the next five years.
The FTSE 100-listed miner also maintained earnings guidance for 2020 while it evaluates the impact of the coronavirus outbreak.
READ: Rio Tinto trims shipment guidance from Australian region hit by cyclone
In the year to 31 December, iron ore production in the Australian Pilbara region dipped 3% to 326mln tonnes, while bauxite jumped 9% to 55mln tonnes.
Revenue rose 7% to US$43bn while profit before tax tanked 39% to US$11bn after US$3.4bn in impairment charges projects and following disposals.
Notably, the Oyu Tolgoi copper mine in Mongolia cost US$2.2bn due to delays and capital expenditure higher than initially planned.
Ordinary dividends rose 24% with a record final payout.
Shares dipped 1% to 3,879.5p on Wednesday at the opening bell.