Geophysics & remote sensing
Airborne and ground surveys plus satellite imagery to map structures and anomalies before anyone breaks ground.
Terra Group / Capabilities
Capabilities
The commodities our team has worked on and the methods we have used to find, mine and process them. We match the method to the deposit, from alluvial gravels to hard rock at depth.
Commodities
28 commodities in six groups, across hard rock, soft rock, alluvial and brine deposits.
Precious metals 5
- AuHard rock gold
- AuSoft rock gold
- AuAlluvial gold
- AgSilver
- PGMPlatinum group metals
Diamonds 2
- CAlluvial diamonds
- CKimberlite-hosted diamonds
Base metals 5
- CuCopper
- ZnZinc
- PbLead
- CoCobalt
- MoMolybdenum
Ferrous & ferroalloy 4
- FeIron ore
- MnManganese
- CrChrome
- VVanadium
Battery & critical minerals 6
- LiLithium brines
- LiLithium clays
- LiLithium hard rock
- CGraphite
- TaTantalum
- NbNiobium
Industrial minerals 6
- TiIlmenite
- TiRutile
- ZrZircon
- CaF₂Fluorspar
- Kaolin
- Aggregates
Exploration methods
From regional targeting to the drill holes that define a resource.
Surface mapping
Field mapping of outcrop, lithology and structure to build the geological model.
Core drilling
Diamond core for intact samples, structural data and resource-grade assays.
RC drilling
Reverse circulation drilling for fast, cost-effective chip samples.
Augering
Shallow sampling of soils, regolith and soft sediments.
Sonic drilling
Continuous, undisturbed cores in unconsolidated material such as alluvials, sands and tailings.
Mining methods
13 methods covering surface, underground, marine and reclamation operations.
Surface
Underground
Alluvial & marine 5
- Dry alluvial mining
- Wet alluvial mining
- Beach mining
- Deep-sea underwater mining
- Dredging
Open pit 4
- Open pit soft rock mining
- Open pit hard rock mining
- Massive open pit
- Small open pit
Underground 3
- Conventional hard rock underground mining
- Mechanised soft rock underground mining
- Mechanised hard rock underground mining
Reclamation 1
- Tailings dam reclamation
Processing methods
13 methods for recovering metals, diamonds and saleable concentrate.
Classification & sorting 2
- Classification
- Sensor-based sorting
Gravity & density 5
- Gravity gold
- Gravity diamonds
- Dense media separation (DMS)
- Jigging
- Spiral concentrators
Flotation 1
- Flotation
Hydrometallurgy 5
- Hydrometallurgy
- Leaching
- Carbon in leach (CIL)
- Carbon in pulp (CIP)
- Heap leach
Have a deposit in mind?
Tell us about the commodity and the stage of your project, and we will put you in touch with the right team.