3Qtr Production Report-Pt 2

Rio Tinto PLC 25 October 2000 Part 2 ALUMINIUM 3Q 4Q 1Q 2Q 3Q 9 MTHS 9 MTHS 1999 1999 2000 2000 2000 1999 2000 Comalco Production and sales from operations owned by Comalco (Rio Tinto 100% (a)) including Comalco's share of primary aluminium production from partly owned smelters. (100% of Comalco's share) ('000 tonnes) Weipa mine, Queensland (Comalco 100%): Beneficiated bauxite production 2,784 2,997 2,777 3,008 2,990 8,390 8,775 Metal grade bauxite shipments 3,019 2,997 2,729 2,766 3,058 8,197 8,553 Calcined bauxite production 27 34 33 36 31 78 100 Boke mine, Guinea (Comalco 4%): Bauxite production 53 177 173 172 111 265 456 Queensland Alumina Limited, Queensland (Comalco 30.3%): Alumina production 277 279 273 294 284 823 851 Eurallumina SpA, Sardinia (Comalco 56.2%): Alumina production 142 141 142 140 146 405 428 Primary aluminium production: Bell Bay, Tasmania (Comalco 100%) 37.9 39.0 37.1 38.8 40.6 112.1 116.5 Boyne Island, Queensland (Comalco 54.2%) 68.0 68.7 69.9 68.2 68.8 199.0 206.9 Tiwai Point, New Zealand (Comalco 79.4%) 65.6 66.1 65.2 64.6 66.0 193.3 195.8 Total Comalco share 171.6 173.8 172.2 171.6 175.5 504.4 519.3 Total sales of Comalco produced aluminium 169.3 173.3 169.6 182.5 157.7 503.1 509.8 (a)Rio Tinto progressively increased its interest in Comalco from 70.4% to 72.4% during the first half of 1999. During the first half of 2000, Rio Tinto offered to acquire all the shares in Comalco and now holds 100%. Weipa bauxite production for the nine months to September 2000 was better than in the comparable period of 1999 due to ongoing process improvements. Bauxite shipments from Weipa were higher than in recent quarters due to increased demand from Queensland Alumina Limited and higher traded market sales. Queensland Alumina Limited and Eurallumina SpA production remained strong as process improvements continued. Overall daily production at the aluminium smelters remained strong due to ongoing improvements. Aluminium sales for the third quarter were lower than in prior quarters due to the timing of shipments being delayed into the fourth quarter of 2000. Anglesey Aluminium Total production at Anglesey Aluminium (Rio Tinto 51%) in the UK. (100% basis) Aluminium hot metal production ('000 tonnes) 33.9 34.7 35.0 35.3 35.3 102.4 105.6 INDUSTRIAL MINERALS 3Q 4Q 1Q 2Q 3Q 9 MTHS 9 MTHS 1999 1999 2000 2000 2000 1999 2000 BORATES Rio Tinto Borax Total production at the Boron mine (Rio Tinto 100%) in California, US and at the Tincalayu, Sijes and Porvenir mines (Rio Tinto 100%) in Argentina. (100% basis) Borates ('000 tonnes) (a) 141 132 145 135 161 428 441 (a) Production is expressed as B2O3 content. TITANIUM DIOXIDE FEEDSTOCK Rio Tinto Iron & Titanium Total Rio Tinto share of titanium dioxide feedstock production in Canada and South Africa. (Rio Tinto share) Titanium dioxide feedstock production ('000 tonnes) 347 350 349 310 341 1,078 1,000 The first half was restricted whilst a furnace at QIT was being repaired. All furnaces at QIT are now back in operation and production capability has been restored to full capacity. 3Q 4Q 1Q 2Q 3Q 9 MTHS 9MTHS 1999 1999 2000 2000 2000 1999 2000 DIAMONDS Argyle Diamonds Total production from mining operations at Argyle Diamonds (Rio Tinto 59.7%) in Western Australia. (100% basis) Ore processed ('000 tonnes): AK1 ore 1,992 2,552 2,575 2,780 2,597 6,951 7,953 Alluvial ore 1,527 1,488 1,260 1,108 1,492 4,455 3,860 Total ore processed 3,519 4,040 3,835 3,888 4,089 11,407 11,812 Diamonds recovered ('000 carats): AK1 7,433 6,876 6,384 7,247 6,439 20,884 20,069 Alluvial 473 544 287 281 318 1,395 886 Total recovered 7,906 7,420 6,671 7,527 6,757 22,279 20,955 AK1 ore processed for the third quarter and the first nine months of 2000 was higher than in the corresponding periods last year as a result of the plant shutdown that occurred in September 1999 to upgrade the scrubber feed system. Lower AKI diamond production for the third quarter and first nine months of the year, relative to the corresponding periods last year, reflected the lower grade of ore processed in line with expectations and as a result of pit development work. 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) 1,286 1,416 1,024 1,338 1,142 3,834 3,504 The consequences of Cyclone Steve, in the first quarter, and related flooding has had an adverse effect on production in 2000. 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) 321 313 321 315 324 956 960 OTHER METALS 3Q 4Q 1Q 2Q 3Q 9 MTHS 9 MTHS 1999 1999 2000 2000 2000 1999 2000 NICKEL Rio Tinto Brasil Limitada Total nickel in matte production at the Fortaleza mine (Rio Tinto 100%) in Brazil. Production (tonnes) 2,620 2,928 2,561 2,170 1,333 6,517 6,064 Production in the third quarter of 2000 was reduced as the mine prepared for transition from open pit to underground operation. Rio Tinto Zimbabwe Total refined metal production at the Empress nickel refinery (Rio Tinto 56.0%) in Zimbabwe. (100% basis) Production (tonnes) 1,802 1,728 1,736 1,676 1,869 5,299 5,281 URANIUM Rossing Uranium Total uranium production at the Rossing Uranium mine (Rio Tinto 68.58%) in Namibia. (100% basis) Production (tonnes U3O8) 812 719 818 726 821 2,452 2,365 Energy Resources of Australia Production at the Ranger mine (68.4% Rio Tinto (a)) in the Northern Territory, Australia. (100% basis) Production (tonnes U3O8) - - - - 548 - 548 (a) Rio Tinto acquired its interest in Energy Resources of Australia as part of the purchase of North Limited. Production data are shown from 11 August 2000, the effective date of the acquisition. ZINC Zinkgruvan Mining AB Total production at the Zinkgruvan mine (Rio Tinto 100% (a)) in Sweden. (100% basis) Ore treated ('000 tonnes) - - - - 127 - 127 Average grades: Zinc (%) - - - - 10.1 - 10.1 Lead (%) - - - - 3.8 - 3.8 Silver (g/t) - - - - 107 - 107 Production of zinc concentrate ('000 tonnes) - - - - 22.7 - 22.7 Production of lead concentrate ('000 tonnes) - - - - 5.5 - 5.5 Production of metal in concentrates: Zinc ('000 tonnes) - - - - 12.8 - 12.8 Lead ('000 tonnes) - - - - 3.9 - 3.9 Silver ('000 tonnes) - - - - 271 - 271 (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. Norzink AS Total refined zinc production at the Norzink smelter (Rio Tinto 50%) in Norway. (100% basis) Production ('000 tonnes) 36.3 35.7 35.6 32.9 35.2 108.3 103.7 Other Wood Fibre North Forest Products Production and sales at North Forest Products operations (Rio Tinto 100% (a)) in Tasmania, Australia. Hardwood chips (domestic & export): Saleable production ('000 tonnes) - - - - 485 - 485 Sales ('000 tonnes) - - - - 369 - 369 Softwood sawlogs (domestic & export): Saleable production ('000 tonnes) - - - - 11 - 11 Sales ('000 tonnes) - - - - 8 - 8 Softwood pulplogs & chips (domestic & export): Saleable production ('000 tonnes) - - - - 20 - 20 Sales ('000 tonnes) - - - - 19 - 19 (b) Rio Tinto acquired its interest in North Forest Products as part of North Limited. Production data are shown from 11 August 2000, the effective date of the acquisition. EXPLORATION Expenditure Total pre-tax exploration expenditure charged to the profit and loss account for the quarter ending 30 September 2000 was US$28 million compared with US$26 million for the comparable quarter of 1999. Total expenditure for the first nine months of 2000 was US$86 million compared with US$90 million in the first nine months of 1999. Major Developments Grasberg, Indonesia Delineation drilling, on Contract of Work Block A, continued at Deep Grasberg and on recently recognised gold-copper mineralisation within the Ertsberg diorite. Feasibility Studies Murowa Diamond Project, Zimbabwe The study that commenced in November 1999 is in the final phase of activity and is now focussed on a feasibility study for a 0.5 million tonnes of ore per annum operation. The study is scheduled for completion by year end. Other Programmes Country Commodity Programme Summary Australia Phosphate Delineation drilling commenced at the Wonarah deposit in the Northern Territory. Brazil Diamonds Sampling of kimberlite pipes continued in the Catalao area of the Parana Basin Canada Uranium Drilling continued on uranium targets in Saskatchewan Turkey Copper Surface exploration commenced on several porphyry copper prospects. United Gold Reconnaissance drilling continued on prospects in States Nevada and Alaska.

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