Usiminas Belo Horizonte

Rua Prof. José Vieira de Mendonça, 3011

31310-260 Belo Horizonte MG T 55 31 3499-8000

F 55 31 3499-8899

www.usiminas.com

USINAS SIDERÚRGICAS DE MINAS GERAIS S.A. - USIMINAS

CNPJ/MF 60.894.730/0001-05
NIRE 313.000.1360-0
Publicly Traded Company

FATO RELEVANTE Usinas Siderúrgicas de Minas Gerais S.A. - USIMINAS ("Usiminas" or "Company"), by its undersigned Finance and Investor Relations Vice-President Officer, pursuant to the terms of CVM Instruction #358/02, hereby informs its shareholders and general public that its Executive Board, in a meeting held on this date, decided to temporarily interrupt operations in Blast Furnaces #1 at the Cubatão plant and #1 at the Ipatinga plant, from May 31st and June 4th, 2015, respectively.

Pig iron production will be reduced by approximately 120 thousand tons per month. Such adjustment intends to adapt the production to the current steel market demand and will bring opportunities of cost reduction and competitiveness improvement during the current market scenario.
Belo Horizonte, May 18th, 2015.

Ronald Seckelmann


Finance and Investor Relations Vice-President Officer

distributed by