Usinas Siderurgicas de Minas Grs Usms : Request of clarification

CNPJ/MF: 60.894.730/0001-05 NIRE: 313.000.1360-0

Publicly-Held Company

Initially, it should be noted that we refer to Official Letter nº 663/2017-SAE, received today, whose content we transcribed below:

"April 17, 2017 663/2017-SAE

Usinas Siderúrgicas de Minas Gerais S.A - USIMINAS To the care of Mr. Ronald Seckelmann

Investor Relations Officer

Ref.: Request of clarification on the news published by the press

Dear Sirs,

On the news published by the section of the Broad, on 04/16/2017, states, among other information, that:

• Usiminas reached a net income of R$121 million in the first two months of this year, which indicates that the steelmaker from Minas Gerais will leave of the quarterly loss after ten periods in the red;

• The EBTIDA (earnings before interest, taxes, depreciation and amortization) of January and February reached R$366 million.

We have not identified this information in the documents sent by Usiminas, through the system Empresas.NET. In case of contradiction, please inform the document and the pages containing this information and the date and time that this information was sent.

It must be noted that the company shall disclose periodic, eventual information, and other information of the market´s interest, through the system Empresas.NET, ensuring its broad and immediate dissemination and fair treatment of its investors and other participants of the market.

Therefore, we request clarification on the marked items, until 04/18/2017, without prejudice to the provision of the sole paragraph of article 6 of CVM Instruction nº 358/02, with its confirmation or not, as well as with other information considered as important.

The answer from Usiminas shall be sent by means of the IPE module, selecting Category: Material Fact or the Category: Notice to the Market, Type: Clarification on consultations CVM/Bovespa and, then, the Subject: News disclosed in the media, which will result in the simultaneous transmission of the file to BM&FBOVESPA and CVM. The option to answer as

Relevant Fact does not withdraw an eventual verification, by CVM, of the liabilities for its untimely disclosure, in terms of CVM Instruction nº 358/02.

We emphasize the obligation, provided in the sole paragraph of article 4 of CVM Instruction nº 358/02, to inquire the managers and controlling shareholders of the company, as well as all the other people with access to material acts and facts, with the purpose to ascertain if they knew about the information that should have been disclosed to the market.

On the file to be sent, it shall be transcribed the content of the consultation above formulated before the company´s answer.

This request is within the scope of the Cooperation Partnership, executed by CVM and BM&FBOVESPA on 12/13/2011, and its non-compliance may subject this company to an eventual application of punitive fine by the Superintendent of Corporate Relations - SEP of CVM, respecting the provision of CVM Instruction nº 452/07.

Yours,

Nelson Barroso Ortega Superintendent of Corporate Relations

BM&FBOVESPA S.A. - Securities Exchange, Commodities And Futures

To the care of: CVM - Securities and Exchange Commission.

Mr. Fernando Soares Vieira - Superintendent of Corporate Relations

Mr. Francisco José Bastos Santos - Superintendent of Relations with the Market and Intermediaries"

In this regard, Usiminas confirms that, in the first two months of the 2017 fiscal year, assessed a net profit of R$121 million and EBITDA (earnings before interest, taxes, depreciation and amortization) of R$366 million, as stated in the news in reference. The Company highlight, however, that such numbers are not definitive, and are still subject to review of its independent auditors, and that the disclosure of the results regarding the first quarter of 2017 will occur on 04.20.2017, as provided in the Annual Calendar of Corporate Events of Usiminas.

Belo Horizonte, April 17th, 2017

Finances and Investor Relations Vice-President Officer