exhibit81.htm - Provided by MZ Technologies

List of Subsidiaries

	Direct and Indirect Ownership interest (%)		Main activities		Jurisdiction

Companies	2008	2009

Full consolidation
CSN Energy S.à r.l.	100.00	100.00	Holding Company		Luxemburg
CSN Export S.à r.l.	100.00	100.00	Financial operations, trading and holding company		Luxemburg
CSN Islands VII Corp.	100.00	100.00	Financial operations		Grand Cayman /Cayman Islands
CSN Islands VIII Corp.	100.00	100.00	Financial operations		Grand Cayman /Cayman Islands
CSN Islands IX Corp.	100.00	100.00	Financial operations		Grand Cayman /Cayman Islands
CSN Islands X Corp.	100.00	100.00	Financial operations		Grand Cayman /Cayman Islands
CSN Islands XI Corp.	100.00	100.00	Financial operations		Grand Cayman /Cayman Islands
CSN Islands XII Corp. (2)	-	100.00	Financial operations		Grand Cayman /Cayman Islands
CSN Overseas S.à r.l.	100.00	100.00	Financial operations and holding company		Luxemburg
CSN Panama S.à r.l.	100.00	100.00	Financial operations and holding company		Luxemburg
CSN Steel S.à r.l.	100.00	100.00	Financial operations and holding company		Luxemburg
Sepetiba Tecon S.A.	99.99	99.99	Maritime port services		Itaguaí/RJ
Estanho de Rondônia S.A.- ERSA	99.99	99.99	Mining		Ariquemes/RO
Cia. Metalic Nordeste	99.99	99.99	Package production		Maracanaú/CE
CSN Cimentos S.A.	99.99	99.99	Cement production		Volta Redonda/RJ
Inal Nordeste S.A. - INOR	99.99	99.99	Steel products service center		Camaçari/BA
CSN Energia S.A.	100.00	100.00	Trading of electricity		Rio de Janeiro/RJ

CSN Aceros S.A.	100.00	100.00	Holding company		Panama City/Panama
CSN Cayman Ltd.	100.00	100.00	Financial operations, trading and holding company		Malta
CSN Iron S.A.	100.00	100.00	Financial operations		Panama City/ Panama
CSN LLC	100.00	100.00	Steel industry		Delaware/EUA
CSN LLC Holdings Corp (1)	100.00	-	Holding company		Delaware/EUA
CSN Partner LLC (1)	100.00	-	Holding company		Delaware/EUA
Energy I Corp. Ltd.	100.00	100.00	Holding company		Malta
Tangua Inc.	100.00	100.00	Financial operations		Panama City/Panama
CSN Madeira Ltd.	100.00	100.00	Financial operations, trading and holding company		Madeira Island/Portugal
Cinnabar Com. de Prod. Siderúrgicos Ltd. (1)	100.00	-	Financial operations and holding company		Madeira Island/Portugal
Hickory Com. Intern. Serv.Ltd	100.00	100.00	Financial operations and trading		Madeira Island/Portugal
Lusosider Projectos Siderúrgicos S.A.	100.00	100.00	Holding company		Seixal/Portugal
Lusosider Aços Planos S.A.	99.94	99.94	Steel industry and holding company		Seixal/Portugal
CSN Finance Ltd.	100.00	100.00	Financial operations and holding company		London/England
CSN Holdings Ltd.	100.00	100.00	Financial operations and holding company		London/England
Cia. Metalúrgica Prada - Prada	99.99	99.99	Package production		São Paulo/SP
GalvaSud S.A.	99.99	99.99	Steel industry		Rio de Janeiro/RJ

Mineração Nacional S.A. (3)	99.99	99.99	Mining and holding company		Congonhas/MG
CSN Aços Longos S.A.	99.99	99.99	Steel and metal products industry and trading		Volta Redonda/RJ
Itaguaí Logística S.A. (4)	99.99	99.99	Logistics		Congonhas/MG
CSN Gestão de Recursos Financeiros Ltda	99.99	99.99	Dormant Company		São Paulo/SP
Congonhas Minérios S.A.	99.99	99.99	Mining and holding company		Congonhas /MG
CSN Acquisitions Ltd.	100.00	100.00	Financial operations and holding company		London/England

CSN Finance B.V. (7)	100.00	-	Financial operations and holding company		Netherlands
International Investment Fund - IIF	100.00	100.00	Financial operations and holding company		Belize
Itamambuca Participações S.A.	99.93	99.99	Mining and holding company		Arcos/MG
Arame Corporation (7)	100.00	-	Dormant company		Panama City/Panama
TdBB S.A.	100.00	100.00	Dormant company		Panama City/Panama
International Charitable Corporation (7)	100.00	-	Dormant company		Panama City/Panama

Transnordestina Logística S.A.	-	84.34	Railroad transportation		Fortaleza/CE
CSN Cement S.à r.l.(2)	-	100.00	Financial operations and holding company		Luxemburg
CSN Ibéria Lda. (2)	-	100.00	Financial operations and holding company		Madeira Island/Portugal
Sociedade em Conta de Participação – SCP	100.00	100.00	Holding company		Rio de Janeiro/RJ

Not consolidated
Nacional Minérios S.A. - Namisa	59.99	59.99	Mining and holding company		Congonhas/MG
Pelotização Nacional	59.99	59.99	Mining and holding company		Congonhas/MG
MG Minérios S.A.	59.99	59.99	Mining and holding company		Congonhas/MG
Namisa Europe Lda (6)	60.00	60.00	Financial operations, trading and holding company		Madeira Island/Portugal
Namisa Internacional Minérios SLU (5)	60.00	60.00	Financial operations, trading and holding company		Madrid, Spain
Itá Energética S.A. - Itasa	48.75	48.75	Electricity Generation		São Paulo/SP
Transnordestina Logística S.A.	84.50		Railroad transportation	-	Fortaleza/CE
MRS Logística S.A - MRS	33.27	33.27	Railroad transportation		Rio de Janeiro/RJ
Riversdale Mining Ltd. (2)	-	14.99	Mining		Australia
Aceros Del Orinoco S.A.	31.81	31.81	Dormant Company		Panama City/Panama
Consórcio da Usina Hidrelétrica de Igarapava	17.92	17.92	Electricity Consortium		Belo Horizonte/MG

Exclusive investment funds consolidated
Mugen – Fundo de Investimento Multimercado	100.00	100.00	Investment funds
Diplic – Fundo de Investimento Multimercado	100.00	100.00	Investment funds

(1) Companies merged during 2009.
(2) Company incorporated during 2009.
(3) Former Minas Pelotização

(4) Former Nacional Siderurgia

(5) Former Inversiones CSN Espanha

(6) Former NMSA Madeira

(7) Companies dissolved during 2009.