operations

Twangiza

Twangiza Mining SA (“Twangiza”) became Banro’s first producing open pit gold mine in October 2011 and commenced commercial production in September 2012.  Banro’s current strategy at Twangiza is to focus on processing near surface oxides and upper transition ores, relative to the liberation and recovery efficiencies of the current processing plant.  Opportunities exist within the concession to significantly grow both the oxide and non-oxide resource, and will be introducing mill upgrades in 2019, as it transitions to harder ore(s). In order to optimize throughput, the Twangiza mine has recently (2018) undergone various blending strategies and  plant modifications to increase recovery rates to c.80+% and have increased mining capacities to deliver the desired ore types in a regimented fashion.

Management believe that there could be an exciting opportunity to explore and develop the Twangiza project into a high-grade underground mine and in 2019 we plan to go through with a deep drillingprogram and underground feasibility study to determine the viability.

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Mine Characteristics

Soft oxide and non-oxide ore with low strip ratio profile

Reserves & Resources 2018

  • Proven & Probable

    1.44 M oz Au;

    22.47Mt @ 2.00 g/t

  • MEASURED & INDICATED

    3.64M oz;

    79.1Mt @ 1.43 g/t

  • INFERRED

    0.25 Moz;

    7.0Mt @ 1.11 g/t

  • GROWTH

    Opportunities exist to grow resource base from both brownfield and greenfield targets generated

  • MINERALIZATION

    Open along strike and at depth to the main Twangiza mineralization

  • MINE LIFE

    5 years based on current reserves, 11 years of total resources

  • Twangiza Exploration

    Given the known geological continuation of the Twangiza deposition, opportunities exist to grow the resource base from both brownfield and greenfield targets generated around Twangiza are highly probable.  Mineralization is open along the strike and at depth of the main Twangiza mineralization providing an opportunity to determine the feasibility of a large sulphide operation. In 2019, Banro is planning to drill 20,000m near mine (west/east flanks, Twangiza Central extensions, Twangiza south, Cirindye and Ntula) bringing in more oxide ounces for the mine and allowing us to further explore these brownfield areas.

    We plan to continue with surface geological mapping in tandem with channel sampling programs to understanding the correlation structures between northern and southern gold mineralization of Twangiza anticline main pit following lithological and structural similarities.

    Management believe that there could be an exciting opportunity to explore and develop the Twangiza project into a high-grade underground mine and in 2019 we plan to go through with a deep drilling program and underground feasibility study to determine the viability.

  • History of Twangiza Gold Deposit

    Given the known geological continuation of the Twangiza deposition, opportunities exist to grow the resource base from both brownfield and greenfield targets generated around Twangiza are highly probable.  Mineralization is open along the strike and at depth of the main Twangiza mineralization providing an opportunity to determine the feasibility of a large sulphide operation. In 2019, Banro is planning to drill 20,000m near mine (west/east flanks, Twangiza Central extensions, Twangiza south, Cirindye and Ntula) bringing in more oxide ounces for the mine and allowing us to further explore these brownfield areas.

    We plan to continue with surface geological mapping in tandem with channel sampling programs to understanding the correlation structures between northern and southern gold mineralization of Twangiza anticline main pit following lithological and structural similarities.

    Management believe that there could be an exciting opportunity to explore and develop the Twangiza project into a high-grade underground mine and in 2019 we plan to go through with a deep drilling program and underground feasibility study to determine the viability.

  • Mineralization

    Given the known geological continuation of the Twangiza deposition, opportunities exist to grow the resource base from both brownfield and greenfield targets generated around Twangiza are highly probable.  Mineralization is open along the strike and at depth of the main Twangiza mineralization providing an opportunity to determine the feasibility of a large sulphide operation. In 2019, Banro is planning to drill 20,000m near mine (west/east flanks, Twangiza Central extensions, Twangiza south, Cirindye and Ntula) bringing in more oxide ounces for the mine and allowing us to further explore these brownfield areas.

    We plan to continue with surface geological mapping in tandem with channel sampling programs to understanding the correlation structures between northern and southern gold mineralization of Twangiza anticline main pit following lithological and structural similarities.

    Management believe that there could be an exciting opportunity to explore and develop the Twangiza project into a high-grade underground mine and in 2019 we plan to go through with a deep drilling program and underground feasibility study to determine the viability.