In 1940, Benedito Moreira Curimbaba created a mining company in the city of Poços de Caldas, located in the Southern Region of the State of Minas Gerais. With his pioneering vision, Benedito Curimbaba invested in some bauxite deposits and developed the use of potassic rocks as a fertilizer. In 1950, he set up the company Benedito Moreira Curimbaba.

In 1961, Benedito entered into an association with his son Sebastião Curimbaba and they founded the first company of the Group, Mineração Curimbaba, a successor to the company Benedito Moreira Curimbaba. Sebastião Curimbaba, a born entrepreneur, spearheaded the development of Mineração, one of the eleven companies of the Curimbaba Group, a family-controlled holding company formed by Oxicur Participações S/A and Alopar Participações e Comércio S/A.

The Curimbaba Group now consists of the following companies: Mineração Curimbaba Ltda., Elfusa Geral de Electrofusão Ltda., Olga S.A Indústria e Comércio, Empresa de Transportes Alcace Ltda; Tarumã Agropecuária e Florestal Ltda and Yoorin Fertilizantes, in Brazil; Sintex Minerals & Services, Inc, Sintex Minerals International, U.S Minerals; Electro Abrasives, in the United States; and Sublime, in South Africa.
During the 50s, the company Benedito Moreira Curimbaba conducted its activities in Poços de Caldas, at the Ponte Preta unit. Upon the founding of Mineração Curimbaba, the pioneering spirit of the Curimbaba family led to the acquisition of the Ponte Preta and Campo do Meio units in 1962 and 1973, respectively. Currently, Mineração Curimbaba conducts its production activities in those two units, which are located in the city of Poços de Caldas.

In the 80s, with its bauxite-based products, exports became significant and the Company consolidated its position in the national and international scenarios.

In 1988, always concerned with environmental and social issues, Mineração Curimbaba founded Tarumã, a company responsible for reforestation and land reclamation. In 2007, the Group created a cultural and social institution: Fundação Curimbaba.

Currently, Mineração Curimbaba and its affiliates in Brazil employ more than 2,000 employees, generating at least 5,000 indirect jobs in the country. With a production capacity of 375 thousand tons per year of sintered bauxite, activated bauxite, sintered refractory clay, and proppants, the Company is a supplier to many industrial and commercial segments, particularly the oil and gas industry, the petrochemical industry, surface blasting, ceramic for electrical welding, refractory and abrasive products, treatment of mineral oils and biodiesel, micromelting and casting.

Most of this volume is exported to the United States, Europe and South America.