Rio Tinto's second quarter Pilbara iron ore shipment was lower than expected. Rio Tinto released its second quarter production data, with Pilbara iron ore production of 79.5 million tons in the second quarter; The shipment volume of Pilbara ore in the second quarter was 80.3 million tons, with an estimated 80.5 million tons. The company maintains the expected annual Pilbara ore transportation volume at 323 million to 338 million tons unchanged.