History and Corporate Profile

















Corporate Profile

CSN Mineração S.A., CSN’s main subsidiary in the sector, is the second largest exporter of iron ore in Brazil and is among the five most competitive in the seaborne market.

With certified reserves of more than 3 billion tonnes according to the Joint Ore Reserves Committee (JORC), the company owns the Casa de Pedra and Engenho mines, the Pires processing complex, an interest in the MRS railway and an iron ore export terminal at the Port of Itaguaí (TECAR).

The integrated operation and its high-value assets allow CSN Mineração to be one of the most efficient companies in the sector, with a leading position in terms of cost and quality.


Casa de Pedra Mine

The oldest iron mining operation in Brazil, Casa de Pedra has more than 6 billion tonnes of resources and 3 billion tonnes in reserves (SNOWDEN certification, 2014).

The ore is mined in four bodies and is processed in the Central Plant (wet route) or the Mobile Plants (dry route), located near extraction areas.

Casa de Pedra currently has a production capacity of 30 million tonnes per year. Processing produces lump, sinter feed and pellet feed.

The ore is transported to the Port of Itaguaí (TECAR) via rail terminals located in the Casa de Pedra mine and the Pires Complex.


The Engenho mine is located near Casa de Pedra and has reserves estimated at 300 million tonnes of ore (SNOWDEN certification, 2014).

Pires has a processing complex equipped with a crushing and screening plant (ITM), a sorting and spiral concentration plant (ITFG) and a high- intensity magnetic concentration plant (CMAI).

Pires currently produces lump, sinter feed and concentrates. The ore is delivered by a railway terminal located inside the complex.


With rail operations in the states of Minas Gerais, Rio de Janeiro and São Paulo, MRS is a concessionaire that operates more than 160 million tonnes of cargo per year. CSN Mineração S.A. holds an 18.63% interest in the controlling group.

Iron ore for export is transported by MRS from our mines in the state of Minas Gerais to the Port of Itaguaí, in the state of Rio de Janeiro.

In the domestic market, this railroad transports most of our products, serving CSN’s own steelworks located throughout the southeast region of Brazil.

Port of Itaguaí (TECAR)

TECAR, located in the Port of Itaguaí, is athe port terminal managed by CSN Mineração. It is connected to MRS and has an annual export capacity of more than 42 million tonnes of iron ore.

The terminal also has the capacity to unload 3.5 million tonnes of reducing agent at berth 101 and the ability to operate other bulk cargo at berth 202.