Commitments and contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments and contingencies

Provision for contingencies and the related judicial deposits

	As of December 31,
	2011		2010
	Provision for contingencies	Judicial deposits	Provision for contingencies	Judicial deposits
Labor and social security claims	751	895	748	874
Civil claims	248	151	510	410
Tax - related actions	654	413	746	442
Others	33	5	39	5
	1,686	1,464	2,043	1,731

Changes in the provisions for asset retirement obligations

	Three-month period ended (unaudited)						Year ended as of December 31,
	December 31, 2011		September 30, 2011		December 31, 2010		2011		2010		2009
Beginning of period	1,273		1,410		1,230		1,368		1,116		887
Accretion expense	25		29		34		125		113		75
Liabilities settled in the current period	(16	)	(11	)	(33	)	(57	)	(45	)	(46	)
Revisions in estimated cash flows	495		(3	)	110		420		125		(23	)
Cumulative translation adjustment	(7	)	(152	)	27		(86	)	59		223
End of period	1,770		1,273		1,368		1,770		1,368		1,116
Current liabilities	73		54		75		73		75		89
Non-current liabilities	1,697		1,219		1,293		1,697		1,293		1,027
Total	1,770		1,273		1,368		1,770		1,368		1,116

Railroads

Commitments and Contingencies

Schedule by year of future minimum rental payments

2012	87
2013	87
2014	87
2015	87
2016 thereafter	955
Total minimum payments required	1,303

Pellet plants

Commitments and Contingencies

Schedule by year of future minimum rental payments

2012	66
2013	58
2014	23
2015	23
2016 thereafter	64
Total minimum payments required	234