Rio Tinto , said on Tuesday it had begun clearing iron ore ships from two Western Australian ports as two tropical cyclones offshore swell seas and complicate its efforts to repair infrastructure damaged by a previous cyclone last month.

Two tropical cyclones off the coast of Western Australia have complicated Rio Tinto’s efforts to repair infrastructure damaged by a previous cyclone last month. The company said on Tuesday it had begun clearing iron ore ships from two Western Australian ports as the cyclones swell seas,

Rio Tinto Group’s iron ore shipments could take a further hit this quarter after operations at two ports in Western Australia’s Pilbara region were hampered by tropical cyclones.

Rio Tinto has begun clearing iron ore ships from two Western Australian ports due to tropical cyclones, and that is impacting efforts to repair infrastructure damaged in a cyclone last month, it said on Tuesday.

Rio Tinto Group, the world’s biggest iron ore exporter, warned shipments of the steelmaking material will be impacted this quarter after a tropical cyclone in Australia’s northwest damaged a port facility.

Australian iron-ore giant Rio Tinto confirmed on Friday that its rail and port operations in the Pilbara region had been disrupted by Tropical Cyclone Sean, which brought record rainfall to parts of Western Australia.