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.

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.

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,