Usiminas Belo Horizonte Rua Prof. José Vieira de Mendonça, 3011 31310-260Belo Horizonte MG T 55 31 3499-8000F 55 31 3499-8899

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

www.usiminas.com

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 "Company") hereby informs that its Board of Directors has approved the necessary investments for the refurbishment of the Blast Furnace 3 ("AF3") of Ipatinga - MG Mill, in the total amount of R$ 1,234 billion by the year 2022, of which approximately R$ 1.147 billion will be disbursed in 2020 and 2021. Such investments involve the acquisition and assembly of equipment, services and other measures necessary for such a reform. The AF3 will continue to operate normally until mid-2021,when the reform will take effect.

The Board of Directors also approved the construction of the new gasometer ("Gasometer") of the Ipatinga - MG Mill, in substitution for the gasometer destroyed on August 10th, 2018, which was the subject of Material Facts published on August 10th and 13th, 2018, in the total amount of R$ 143.9 million which will be disbursed between 2019, 2020 and 2021. The Gasometer will have a capacity of 150,000 m3 and will store gases from Steelworks (LDG) and Blast Furnace (BFG).

Belo Horizonte, May 27th, 2019.

Alberto Ono

Vice-President of Finances and Investor Relations Officer

Classificação da informação: Pública

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USIMINAS - Usinas Siderúrgicas de Minas Gerais SA published this content on 27 May 2019 and is solely responsible for the information contained herein. Distributed by Public, unedited and unaltered, on 27 May 2019 13:43:06 UTC