Name of the Project
Aripuanã polymetallic project.

Location
The project is located in the state of Mato Grosso, in the central west of Brazil.

Project Owner/s
Mineração Dardanelos, a joint venture between Nexa Brazil (62.3%), Nexa Peru (7.7%) and Mineração Rio Aripuanã (30%), a subsidiary of Karmin Exploration.

Project Description
Aripuanã is an underground polymetallic mine and concentrate processing facility to extract zinc, copper and lead.

The Aripuanã deposits are typical volcanogenic massive sulphide expected to support a production of 2.3-million tonnes of ore a year. The processing plant can treat up to 6 300 t/d of ore.

The average zinc equivalent production of the project is estimated at 120 000 t/y for 13 years, considering only the proven and probable mineral reserves estimated at 26.2-million tonnes grading 3.7% zinc, 1.4% lead, 0.2% copper, 0.3 g/t gold and 34 g/t silver. It is estimated that Aripuanã could produce an average of about 66 700 t/y of zinc in concentrate, 23 000 t/y of lead in concentrate, 3 700 t/y of copper in concentrate and 1.87-million ounces of silver, as well as 13 000 oz of gold contained in the lead and copper concentrates.

Potential Job Creation
Not stated.

Net Present Value/Internal Rate of Return
Not stated.

Capital Expenditure
The estimated aggregate capital expenditure required for this project is $354.3-million.

Planned Start/End Date
Production is expected to start in 2021.

Latest Developments
SNC-Lavalin has been awarded an engineering, procurement and construction management (EPCM) contract from NEXA Resources for the project.

Key Contracts and Suppliers
SNC-Lavalin (EPCM).

On Budget and on Time?
Too early to state.

Contact Details for Project Information
Nexa Resources investor relations, email ir@nexaresources.com.