Q2 Production Report - Pt.2

Rio Tinto PLC 25 July 2001 PART 2 DIAMONDS Argyle Diamonds Total production from mining operations at Argyle Diamonds (Rio Tinto 99.8%(a)) in Western Australia. (100% basis) Ore processed ('000 tonnes): AK1 ore 2,780 2,597 2,466 2,697 2,423 5,356 5,120 Alluvial ore 1,108 1,492 1,048 1,007 1,204 2,368 2,211 Total ore processed 3,888 4,089 3,514 3,704 3,627 7,723 7,331 Diamonds recovered ('000 carats): AK1 7,247 6,439 5,354 4,918 4,759 13,630 9,677 Alluvial 281 318 166 164 263 568 427 Total recovered 7,527 6,757 5,520 5,082 5,022 14,198 10,104 (a) During the second half of 2000, Rio Tinto increased its interest in Argyle from 59.7% to 99.8% by virtue of its acquisition of Ashton Mining. AK1 carat production was lower in the second quarter of 2001 than in the comparable period of 2000 due to ongoing processing of lower grade ore to facilitate pit development. Alluvials carat production was higher than in the previous two quarters due to mining higher grade blocks. Ashton Mining Total Rio Tinto share of production from the Ashton Mining (Rio Tinto 100% (a)) interests apart from Argyle. (Rio Tinto share) Ore processed ('000 tonnes) - - 95 95 155 - 250 Diamonds recovered ('000 carats) - - 37 15 22 - 36 (a) Production data are shown from 10 November 2000, the effective date of acquisition of Ashton Mining. Carat production in the second quarter of 2001 increased compared with the first quarter of 2001, following resumption of operations at Merlin in May that had been suspended due to the effect of wet weather. IRON ORE 2Q 3Q 4Q 1Q 2Q 1H 1H 2000 2000 2000 2001 2001 2000 2001 Hamersley Iron Total production and shipments are for all the mines operated by Hamersley Iron (Rio Tinto 100%). These mines are Paraburdoo, Mount Tom Price, Marandoo, Yandicoogina, Brockman (all Rio Tinto 100%) and Channar (Rio Tinto 60%) all in Western Australia. (100% basis) Saleable iron ore produced ('000 tonnes): Paraburdoo, Mount Tom Price, Marandoo, Brockman and Yandicoogina 12,978 14,642 14,857 13,579 14,352 25,596 27,931 Channar 2,465 2,732 2,811 2,453 2,716 5,059 5,169 Total production 15,443 17,374 17,668 16,032 17,068 30,655 33,100 Total shipments ('000 tonnes) 16,870 17,301 17,722 15,312 16,504 32,032 31,816 In the first half of 2001, Hamersley achieved record first half production; 8% higher than the previous first half record in 1999. Second quarter production was 11% higher than the previous second quarter record, in 2000. This was achieved despite an extended delay at a port dumper, which caused a number of train cancellations. Shipments for the first half and second quarter of 2001 were slightly below last year due to lower shipments to Japan and Europe, partly offset by higher sales to China. Iron Ore Company of Canada Total production from the Carol Lake operations (Rio Tinto 56.1% (a)) in Labrador, Canada. (100% basis) Carol Lake operations Saleable production: Concentrates ('000 tonnes) - 567 868 638 1,019 - 1,657 Pellets ('000 tonnes) - 1,609 3,092 2,702 3,306 - 6,008 Shipments: Concentrate ('000 tonnes) - 718 1,124 652 1,098 - 1,750 Pellets ('000 tonnes) - 1,781 2,517 1,987 2,824 - 4,811 (a) Rio Tinto acquired its interest in Iron Ore Company of Canada as part of the purchase of North Limited. Production data are shown from 11 August 2000, the effective date of the acquisition. The second quarter saw a significant improvement in IOC's production performance, with a new quarterly record being set for pellet production and new daily pellet production records being set for all pellet types during the quarter. Commissioning of a new fleet of haulage trucks resulted in a dramatic improvement in fleet availability. First half sales were lower than last year due to the softening of the European and North American steel markets. Rio Tinto Brasil Limitada Total production at the Corumba mine (Rio Tinto 100%) in Corumba, Mato Grosso do Sul, Brazil. Corumba mine Total iron ore production ('000 tonnes) (a) 173 281 178 156 116 319 272 (a) Production includes by-product fines. Production was lower in the second quarter of 2001, than in previous quarters, due to a delay until June 2001 in renewing a major sales contract. Robe River Iron Associates Total production from the Pannawonica mine (Rio Tinto 53% (a)) in Western Australia. (100% basis) Pannawonica mine Saleable production ('000 tonnes) - 4,831 7,954 6,781 6,970 - 13,751 Shipments ('000 tonnes) - 5,600 7,295 7,305 7,136 - 14,441 (a) Rio Tinto acquired its interest in Robe River as part of the purchase of North Limited. Production data are shown from 11 August 2000, the effective date of the acquisition. Production for the second quarter of 2001 was 3% higher compared with the previous quarter. Production was adversely affected in the second quarter of 2001 by machinery maintenance and commitment to training. With the commissioning of an additional process plant, production levels are expected to improve. NICKEL Rio Tinto Brasil Limitada Total nickel in matte production at the Fortaleza mine (Rio Tinto 100%) in Brazil Fortaleza mine Production (tonnes) 2,170 1,333 2,674 2,710 2,487 4,731 5,197 Production was lower in the second quarter of 2001 due to a 12 day unscheduled shutdown of the electric arc furnace in April and due to national energy reduction requirements. Rio Tinto Zimbabwe Total refined metal production at the Empress Nickel refinery (Rio Tinto 56%) in Zimbabwe. (100% basis) Empress Nickel refinery Production (tonnes) 1,676 1,869 1,654 1,623 1,651 3,412 3,274 SALT Dampier Salt Total production of salt from Dampier and Lake MacLeod (Rio Tinto 64.9%) in Western Australia. (100% basis) Salt production ('000 tonnes) 1,338 1,142 1,095 1,385 1,571 2,362 2,956 TALC The Luzenac Group Total talc production from Luzenac Group operations in Europe (Rio Tinto 99.9%) and North America (Rio Tinto 100%). (100% basis) Talc production ('000 tonnes) 315 324 302 323 319 636 641 TITANIUM DIOXIDE FEEDSTOCK Rio Tinto Iron and Titanium Rio Tinto share of titanium dioxide feedstock production in Canada and South Africa. (Rio Tinto share) Titanium dioxide feedstock production ('000 tonnes) 310 341 368 356 371 659 727 URANIUM Energy Resources of Australia Ltd Production at the Ranger mine (68.4% Rio Tinto (a)) in the Northern Territory, Australia. (100% basis) Ranger mine Production (tonnes U3O8) - 548 1,216 1,320 947 - 2,267 (a) Rio Tinto acquired its interest in ERA as part of the purchase of North Limited. Production data are shown from 11 August 2000, the effective date of the acquisition. Rossing Uranium Ltd Total uranium production at the Rossing Uranium mine (Rio Tinto 68.58%) in Namibia. (100% basis) Production (tonnes U3O8) 726 821 836 724 449 1,544 1,173 Production in the second quarter of 2001 was reduced due to a major maintenance shutdown in April. ZINC Norzink AS Total refined zinc production at the Norzink smelter (Rio Tinto 50% (a)) in Norway. (100% basis) Production ('000 tonnes) 32.9 35.2 34.7 36.3 4.5 68.5 40.9 (a) Rio Tinto completed the sale of its interest in Norzink on 17 April 2001. Zinkgruvan Mining AB Total production at the Zinkgruvan mine (Rio Tinto 100% (a)) in Sweden. Ore treated ('000 tonnes) - 127 179 201 203 - 404 Average grades: Zinc (%) - 10.1 11.1 8.2 8.0 - 8.1 Lead (%) - 3.8 4.3 3.3 3.9 - 3.6 Silver (g/t) - 107 112 75 87 - 81 Production of zinc concentrate ('000 tonnes) - 22.7 33.9 28.0 26.6 - 54.6 Production of lead concentrate ('000 tonnes) - 5.5 9.1 7.9 9.6 - 17.5 Production of metal in concentrates: Zinc ('000 tonnes) - 12.8 18.7 15.3 14.8 - 30.1 Lead ('000 tonnes) - 3.9 6.6 5.7 6.9 - 12.7 Silver ('000 tonnes) - 271 431 347 396 - 744 (a) Rio Tinto acquired its interest in Zinkgruvan as part of North Limited. Production data are shown from 11 August 2000, the effective date of the acquisition. Zinc grades were relatively high in 2000 and, as expected, they have been lower in 2001. Exploration Expenditure Total pre-tax exploration expenditure charged to the profit and loss account for the first half of 2001 was US$54 million compared with US$58 million for the first half of 2000. Ongoing Programmes Country Commodity Programme Summary Indonesia Copper and In Block A, delineation drilling continued gold on porphyry gold-copper mineralisation within the Ertsberg intrusion and on extensions to the Kucing Liar skarn system on the periphery of the Grasberg intrusion. Turkey Copper and Drilling continued on the Cukur Dere gold- gold copper prospect in eastern Turkey in alliance with Anatolia Minerals. North America Copper An agreement was signed allowing Rio Tinto to earn a 55% interest in BHP Billiton's deep high-grade porphyry copper discovery at the Superior mine in Arizona. Drilling of the prospect will commence in July. South America Copper Early encouragement was obtained from reconnaissance drilling of the Shougang option Marcona copper-gold property in southern Peru. India Diamonds First-pass sampling was completed on recently granted reconnaissance permits in Karnataka and Andhra Pradesh. Guinea Diamonds A 500 tonne surface bulk sample was collected from the K23 pipe on the Trivalence option Aredor diamond concession in southeastern Guinea. Iran Gold Further encouragement was obtained from drilling of the Dashkasan bulk tonnage gold prospect in Kurdistan. Guinea Iron Ore Drilling recommenced at the Simandou lump hematite prospect in southeastern Guinea. China Nickel Exploration around the Jinchuan nickel mine commenced in joint venture with the Gansu Qinqi Mineral Company. Australia Phosphate Drilling and metallurgical test work continued at the Wonarah phosphate deposit in the Northern Territory.

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