2007 Financial statements

Note 37 - Principal subsidiaries

**At 31 December 2007**
Company and country of incorporation/operation	Principal activities	Class of shares held	Proportion of class held %		Group interest %
Australia
Argyle Diamond Mines	Mining and processing of diamonds	(a)			100
Coal & Allied Industries Limited	Coal mining	Ordinary	75.71		75.71
Rio Tinto Aluminium (Holdings) Limited	Bauxite mining; alumina production; primary aluminium smelting	Ordinary	100		100
Dampier Salt Limited	Salt production	Ordinary	68.40		68.40
Energy Resources of Australia Limited	Uranium mining	Class A	68.39		68.39
Hamersley Iron Pty Limited	Iron ore mining	Ordinary	100		100
Queensland Coal Pty Limited (b)	Coal mining	Ordinary	100		100
Canada
Iron Ore Company of Canada Inc	Iron ore mining; iron ore pellets	Series A & E	58.72		58.72
QIT-Fer et Titane Inc	Titanium dioxide feedstock; high purity iron and steel	Common shares	100		100
		Class B preference shares	100		100
Alcan Inc. (c)	Bauxite mining; alumina refining; production of specialty alumina; aluminium smelting, manufacturing and recycling; engineered products; flexible and specialty packaging	Common shares	100		100
France
Talc de Luzenac S.A.	Mining, refining and marketing of talc	E 15.25	100		100
Indonesia
P.T. Kelian Equatorial Mining	Gold mining (now in close down phase)	Ordinary US$1	90		90
Namibia
Rössing Uranium Limited (d)	Uranium mining	'B'N$1 'C'N10c	71.16 70.59	}	68.58
Papua New Guinea
Bougainville Copper Limited (e)	Copper and gold mining	Ordinary 1 Kina	53.58		53.58
South Africa
Palabora Mining Company Limited	Copper mining, smelting and refining	R1	72.03		57.67
Richards Bay Iron and Titanium (Pty) Limited	Titanium dioxide feedstock; high purity iron	R1	50.5		50
United States of America
Kennecott Holdings Corporation (including Kennecott Utah Copper, Kennecott Minerals, Kennecott Land and Kennecott Exploration)	Copper and gold mining, smelting and refining, land development and exploration activities	Common US$0.01	100		100
Rio Tinto Energy America Inc.	Coal mining	Common US$0.01	100		100
U.S. Borax Inc.	Mining, refining and marketing of borates	Common US$1	100		100


Notes	Expand
This entity is unincorporated. Queensland Coal Pty Limited is the main legal entity that owns the assets of the Tarong mine and also owns the shares shown in note 40 of Hail Creek, Blair Athol and Kestrel. On 23 October 2007, the Rio Tinto Group acquired a controlling 79.42 per cent interest in the issued share capital of Alcan Inc. The remaining 20.58 per cent was acquired by 14 November 2007. See note 41. The Group's shareholding in Rössing Uranium Limited carries 35.54 per cent of the total voting rights. Rössing is consolidated by virtue of Board control. The results of Bougainville Copper Limited are not consolidated. See note 47. The Group comprises a large number of companies and it is not practical to include all of them in this list. The list therefore only includes those companies that have a more significant impact on the profit or assets of the Group. The Group's principal subsidiaries are held by intermediate holding companies and not directly by Rio Tinto plc or Rio Tinto Limited. Companies operate mainly in the countries in which they are incorporated.