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TERNA Magnesites, Mantoudi Exploration, Greece

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Project Information

TERNA Magnesites operate in Evvia, central Greece and is the main producer of magnesite in Greece from a number of underground and open pit operations. This is the first implemented extensive exploration program in the recent years aiming to significantly increase company’s resources.
  • Client :TERNA Magnesites
  • Location :Greece
  • Year launched :2019
  • Status :Ongoing
  • Value :4 M €
  • Drilled :>13,000 meters

Project Description

Two (2) surface rigs were deployed in several localities drilling boreholes up to 220m in length. The project contained from sparse green field borehole to regularly-spaced boreholes in proximity to know deposits. Geotest offered a full package including drilling, core orientation, geological logging R&R estimation and open pit design.

Project Challenge

It is a challenging project with services ranging from green field exploration to near-mine drilling and includes mining support services (geological modelling, R&R estimation and pit design).

  • Core orientation
  • Core logging
  • Green field exploration
  • Increase geological confidence in near-mining projects
  • Resources and Reserves estmation
  • Pit design and LoM planning


Project findings include the delineation of new stockwork material to rare medium-sized magnesite veins. The project successfully increase company’s resources and supported active operations and near mining projects.

Geotest Consulting Engineers SA

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