BHP (ASX: BHP) CEO Brandon Craig said on Tuesday the company did not expect the industrial action at Port Hedland in Western Australia, the world’s largest iron ore export hub, to impact its performance.

Some BHP workers at Port Hedland downed tools earlier this month in a second planned stoppage, marking the first major industrial action at the site in a quarter-century. BHP is due to meet union officials later on Tuesday.

The miner reported better-than-expected full-year earnings earlier in the day, helped by record copper prices that cemented the red metal’s position ahead of iron ore as BHP’s biggest earnings driver.

(Reporting by Melanie Burton in Melbourne and Renju Jose in Sydney; Editing by Tom Hogue)