exhibit81.htm - Generated by SEC Publisher for SEC Filing

List of Subsidiaries – Form 20-F 2010

	Equity interest (%)
Companies	2010	2009	Main activities	Jurisdiction

Direct interest: full consolidation
CSN Islands VII	100.00	100.00	Financial transactions	Grand Cayman/Cayman Island
CSN Islands VIII	100.00	100.00	Financial transactions	Grand Cayman/Cayman Island
CSN Islands IX	100.00	100.00	Financial transactions	Grand Cayman/Cayman Island
CSN Islands X	100.00	100.00	Financial transactions	Grand Cayman/Cayman Island
CSN Islands XI	100.00	100.00	Financial transactions	Grand Cayman/Cayman Island
CSN Islands XII	100.00	100.00	Financial transactions	Grand Cayman/Cayman Island
Tangua	100.00	100.00	Financial transactions	Panama City/Panama
International Investment Fund	100.00	100.00	Equity interests and financial transactions	Beliza
CSN Minerals (1)	100.00	100.00	Equity interests	Madrid/Spain
CSN Export	100.00	100.00	Financial transactions, sale of products and equity interests	Luxemburg
CSN Metals (2)	100.00	100.00	Equity interests and financial transactions	Madrid/Spain
CSN Americas (3)	100.00	100.00	Equity interests and financial transactions	Madrid/Spain
CSN Steel	100.00	100.00	Equity interests and financial transactions	Madrid/Spain
TdBB S.A	100.00	100.00	Dormant company	Panama City/Panama
Galvasud - Merged on 1/29/2010		99.99	Steel-making	Rio de Janeiro/RJ, Brazil
Sepetiba Tecon	99.99	99.99	Port services	Itaguaí/RJ, Brazil
Mineração Nacional	99.99	99.99	Mining and equity interests	Congonhas/MG,Brazil
CSN Aços Longos - Merged on 1/28/2011	99.99	99.99	Manufacture and sale of steel and/or metallurgical products	Volta Redonda/RJ, Brazil
Florestal Nacional (4)	99.99	99.99	Reforestation	São Paulo/SP, Brazil
Estanho de Rondônia - ERSA	99.99	99.99	Tin mining	Ariquemes/RO, Brazil
Cia Metalic Nordeste	99.99	99.99	Manufacture of packaging and distribution of steel products	Maracanaú/CE, Brazil
Companhia Metalúrgica Prada	99.99	99.99	Manufacture of packaging and distribution of steel products	São Paulo/SP, Brazil
CSN Cimentos	99.99	99.99	Manufacture of cement	Volta Redonda/RJ, Brazil
Inal Nordeste - Merged on 05/30/2011	99.99	99.99	Service center for steel products	Camaçari/BA, Brazil
CSN Gestão de Recursos Financeiros	99.99	99.99	Dormant company	São Paulo/SP, Brazil
Congonhas Minérios	99.99	99.99	Mining and equity interests	Congonhas/MG,Brazil
CSN Energia	99.99	99.90	Sale of electric power	Rio de Janeiro/RJ, Brazil
Transnordestina Logística	76.45	84.34	Railroad logistics	Fortaleza/CE, Brazil
Special partnership - Extinguished on 11/30/2010		39.47	Equity interests	Rio de Janeiro/RJ, Brazil

Indirect interest: full consolidation
CSN Aceros	100.00	100.00	Equity interests	Panama City/Panama
CSN Cayman - Liquidated on 8/31/2010		100.00	Financial transactions, sale of products and equity interests	Malta
CSN IRON - Extinguished on 1/31/2010		100.00	Financial transactions and equity interests	Panama City/Panama
Companhia Siderurgica Nacional LLC	100.00	100.00	Steel-making	Delaware/EUA
CSN Europe (5)	100.00	100.00	Financial transactions, sale of products and equity interests	Madeira Island/Portugal
CSN Ibéria	100.00	100.00	Financial transactions and equity interests	Madeira Island/Portugal
CSN Portugal (6)	100.00	100.00	Financial transactions and sale of products	Madeira Island/Portugal
Lusosider Projectos Siderúrgicos	100.00	100.00	Equity interests	Seixal/Portugal
Lusosider Aços Planos	99.94	99.94	Steel-making and equity interests	Seixal/Portugal
CSN Acquisitions	100.00	100.00	Financial transactions and equity interests	London/England
CSN Resources (7)	100.00	100.00	Financial transactions and equity interests	Luxemburg
CSN Finance UK Ltd	100.00	100.00	Financial transactions and equity interests	London/England
CSN Holdings UK Ltd	100.00	100.00	Financial transactions and equity interests	London/England
Energy I - Liquidated on 8/31/2010		99.99	Equity interests	Malta
Itamambuca Participações - Merged on 05/30/2011	99.99	99.99	Mining and equity interests	Arcos/MG, Brazil
Special partnership - extinguished on 11/30/2010		60.53	Equity interests	Rio de Janeiro/RJ, Brazil

Direct interest: proportional consolidation
Nacional Minérios (NAMISA)	59.99	59.99	Mining and equity interests	Congonhas/MG, Brazil
Itá Energética	48.75	48.75	Genaration of electric power	São Paulo/SP, Brazil
MRS Logística	22.93	22.93	Railroad transportation	Rio de Janeiro/RJ, Brazil
Consórcio da Usina Hidrelétrica de Igarapava	17.92	17.92	Electric power consortium	Belo Horizonte/MG, Brazil
Aceros Del Orinoco	22.73	22.73	Dormant company	Panama City/Panama

Indirect interest: proportional consolidation
Namisa International Minerios SLU	60.00	60.00	Equity interests and sale of products and ores	Madrid/Spain
Namisa Europe	60.00	60.00	Equity interests and sale of products and ores	Madeira Island/Portugal
Pelotização Nacional - Merged on 12/30/2010		59.99	Mining and equity interests	Congonhas/MG, Brazil
MG Minérios - Merged on 12/30/2010		59.99	Mining and equity interests	Congonhas/MG, Brazil
MRS Logística	10.34	10.34	Railroad transportation	Rio de Janeiro/RJ, Brazil
Aceros Del Orinoco	9.08	9.08	Dormant company	Panama City/Panama

(1) New corporate name of CSN Energy, changed on December 15, 2010.

(2) New corporate name of CSN Overseas, changed on December 15, 2010.

(3) New corporate name of CSN Panamá, changed on December 15, 2010.

(4) New corporate name of Itaguaí Logística, changed on December 27, 2010.

(5) New corporate name of CSN Madeira, changed on January 8, 2010.

(6) New corporate name of Hickory, changed on January 8, 2010.

(7) New corporate name of CSN Cement, changed on June 18, 2010.

· Exclusive funds

	Equity interest in capital social (%)
Special purpose entities	2010	2009	Principal activities
Direct equity interest: full consolidation
DIPLIC - Fundo de investimento multimercado	100.00	100.00	Multimarket Investment fund
Mugen - Fundo de investimento multimercado	100.00	100.00	Multimarket investment fund