Usinas Siderurgicas de Minas Gerais Usiminas : Clarification on the news published by the press

Usiminas Belo Horizonte

Rua Prof. José Vieira de Mendonça, 3011

31310-260 Belo Horizonte, MG

P 55 31 3499-8000 F 55 31 3499-8899www.usiminas.com

(Free Translation: For reference only - Original in Portuguese)

USINAS SIDERÚRGICAS DE MINAS GERAIS S.A. - USIMINAS

CNPJ/MF: 60.894.730/0001-05

NIRE: 313.000.1360-0

Publicly-Held Company

NOTICE TO THE MARKET

Usinas Siderúrgicas de Minas Gerais S.A. - USIMINAS ("Usiminas" or the "Company"), in response to the request of clarification sent by B3 S.A. - Brasil, Bolsa, Balcão, hereby informs the following. Initially, it should be noted that we refer to Official Letter nº 1.435/2018-SAE, received on 7.10.2018, which content we transcribed below:

"July 10th, 2018 1.435/2018-SAE

Usinas Siderúrgicas de Minas Gerais S.A - USIMINAS

To the care of Mr. Alberto Akikazu Ono

Investor Relations Officer

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

Dear Sirs,

On the news published by the newspaper Valor Econômico, on 7/10/2018, under the headings "Usiminas avalia retomar alto-forno em Cubatão (Usiminas evaluates resume blast furnace in Cubatão)", include, among other information, that:

• 1. Usiminas already considers resuming the primary areas of the Cubatão plant;

• 2. The measure would cost almost R$ 1 billion in investments and would take between one and two years to be effective; and

3. Make a final decision of which is Cubatão medium-term destination is among Usiminas' priorities.

We request clarification on the items indicated, by 7/11/2018, with your confirmation or otherwise, as well as other information considered important."

In this regard, Usiminas informs that, since the decision for the temporary interruption of activities of the primary areas of the Cubatão Plant, in accordance with the Material Fact disclosed on October 29th, 2015, maintains a constant evaluation of the market conditions to define the moment of resumption of such activities. In this sense, it is worth mentioning that any measure related to this matter will be subject to the approval of the Company's Board of Directors, and there is no decision that needs or should be publicly disclosed at this moment.

Belo Horizonte, July 11th, 2018.

Alberto Ono

Finances and Investor Relations Vice-President