What Spectrem Air does

Spectrem Air (Spectrem Air Proprietary Limited) is a South African engineering consulting firm specialising in airborne geophysical surveys for the mineral exploration sector. Founded circa 1990 and headquartered at Lanseria International Airport, the company operates an integrated service offering centred on the SpectremPLUS system — a fixed-wing, Basler DC3-based airborne platform that simultaneously collects high-resolution time-domain electromagnetic (TDEM), magnetic, and radiometric data. Its proprietary technology stack includes a patented broadband transmitter square waveform (100% duty cycle, up to 1800 A RMS dipole moment), full 3-component waveform recording, B-field STEP response processing that is insensitive to superparamagnetic effects, real-time onboard processing, and in-house 3D inversion and interpretation tools.

The business generates revenue through project-based professional services contracts with mining companies, charging per survey programme with deliverables ranging from standard processed grids (EM channels, TMI, conductivity depth images, regolith and DTM maps, radiometric grids) to advanced interpretation products (depth to conductors, structural and lineament maps, 3D conductivity models, 1D/2D/3D inversions). Customer segments span junior exploration companies, mid-tier mining entities, and major mining houses, with named engagements including IGO Limited, Prodigy Gold NL, Anglo American, De Beers, and Ma'aden Minerals. The company is privately held, with Anglo American and De Beers as main shareholders and technology development partners. Geographic reach covers Africa (South Africa, Namibia, Zambia, DRC, Angola), Australia, North and South America, and — most recently — Saudi Arabia under a multi-season Ma'aden contract awarded in 2025 as part of Saudi Arabia's Vision 2030 mineral exploration strategy. Spectrem reports no accidents across 35 years of operations and approximately 2.5 million line kilometres of data collected over five continents.

Name

Spectrem Air

Legal name

Spectrem Air Proprietary Limited

Website

https://spectrem.co.za

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

11–50 employees

Short description

Spectrem Air is a South African airborne geophysical survey firm operating the proprietary SpectremPLUS fixed-wing AEM platform to deliver TDEM, magnetic, and radiometric data and 3D interpretation services to mining exploration clients across multiple continents.

Ownership category

akta.pro rank

Product category

Airborne Geophysical Survey Services

NAICS

Geophysical Surveying and Mapping Services (541360)

SIC

Search, Detection, Navagation, Guidance, Aeronautical Sys (3812), Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

Mineral Exploration & Geoscience Services (Geology, Geophysics, Geochemistry, Resource Modeling) (IMAKAKAA)

akta.pro secondary industries

Satellite Imagery & Remote Sensing Geospatial Platforms (BPAMANAM), Radar Systems & Subsystems (Airborne, Ground, Naval) (IMABAGAA)

Keywords

• Airborne electromagnetic surveys
• Mineral exploration services
• Geophysical data processing
• Magnetic gradiometry surveys
• 3D subsurface interpretation

Headquarters

HQ city

Gauteng

HQ country

South Africa

HQ region

Africa

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Airborne Geophysical Survey Services: Provides airborne electromagnetic, magnetic, and radiometric survey services to mining companies and exploration firms. Revenue generated through project-based contracts for data collection, processing, and interpretation services. Recent major contract awarded for three-season survey in Saudi Arabia with Ma'aden Minerals.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Spectrem Air provides project-based airborne geophysical survey services for mineral exploration and geological mapping, deploying its proprietary SpectremPLUS fixed-wing AEM system on a Basler DC3 aircraft to simultaneously collect high-resolution time-domain electromagnetic (TDEM), magnetic and radiometric data. The offering is delivered with in-house data processing and 3D interpretation tools that produce standard data products (CDIs, anomaly selections, regolith maps, DTM, radiometric grids) and advanced interpretation products (depth to conductors, structural maps, 3D conductivity models) for clients in mining and exploration.

Product overview

Spectrem Air offers a single integrated airborne geophysics platform centered on the SpectremPLUS system—a fixed-wing aircraft-based platform that simultaneously collects high-resolution time-domain electromagnetic (TDEM), magnetic, and radiometric data using proprietary sensors including the SQUID magnetic gradiometer. The system is supported by in-house data processing and 3D interpretation tools that deliver standard processed data products (EM grids, conductivity depth images, anomaly selections, regolith maps, DTM, radiometric grids) and advanced interpretation products (depth to conductors, structural maps, 3D conductivity maps, inversion models). The portfolio enables simultaneous shallow (1-100m) and deep (>500m) subsurface mapping for geological mapping, mineral exploration, hydrogeology, and geo-engineering applications.

Differentiator

Problem solved

Functional benefit

Brands

• SPECTREMPLUS: The most advanced fixed-wing airborne technology system, collecting high-resolution time-domain electromagnetic (TDEM), magnetic, and radiometric data. Features patented broadband transmitter square (100% duty cycle) waveform, high RMS dipole moment up to 1800 A, full waveform recording with 3-component secondary field, and stable Basler DC3 platform.

Products and services

• SpectremPLUS System Fixed-wing airborne electromagnetic survey platform collecting high-resolution time-domain electromagnetic (TDEM), magnetic and radiometric data using a Basler DC3 aircraft, enabling simultaneous shallow (1–100m) and deep (100–1000m+) subsurface mapping for mining and exploration clients.
• SQUID Magnetic Gradiometer Superconductor magnetic gradiometer sensor co-developed with Anglo American and De Beers that enhances the capability of sensors used in airborne geophysical surveys for mineral exploration.
• Standard Processed Data Products Deliverables from SpectremPLUS surveys including EM channel and Total Magnetic Intensity (TMI) grids, Late Time constant (Tau) and Conductivity Depth Images (CDIs), anomaly selections with depth/dip/conductance, regolith thickness map, high-resolution DTM, and radiometric grids (K, U, Th and Total Count) for exploration clients.
• Data Interpretation Products High-end interpretation tools providing depth to conductors, structural and lineament maps, 3D conductivity maps, and integrated 1D, 2D and 3D conductivity and magnetic inversion models for geological mapping and exploration targeting.

Quantifiable outcome

• Deep detection >600m validated by borehole intersections at Gamsberg zinc deposit
• +3 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Three partnerships are on record, tiered flagship and core.

• Ma'aden MineralsflagshipStrategic or Co-development Partner · 1 January 2025Awarded a three-season survey contract in Saudi Arabia as part of Ma'aden's Vision 2030 Strategy for mineral exploration. Spectrem Air will fly during winter seasons (October to April) for three years with staff on site for all data processing within the country.
• Saudi GeophysicalcoreStrategic or Co-development Partner · 1 January 2025Local partnership in Saudi Arabia for the Ma'aden Minerals survey project. Collaborating on airborne geophysical survey operations in the region.
• Bell GeospacecoreTechnology or Integration · 1 January 2025Partnership for Saudi Arabia project where Bell Geospace collects complementary datasets (gravity gradiometry) to enhance exploration results for Ma'aden Minerals.

Scale indicators5 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Bell Geospace: Provider of airborne gravity gradiometry surveys for mineral and oil & gas exploration. Already partnered with Spectrem Air on the Ma'aden Saudi Arabia project, and competes for similar large-footprint exploration survey mandates.
• Xcalibur Multiphysics: Airborne geophysical survey company offering helicopter EM, magnetic, and radiometric surveys for mining exploration globally. Comparable customer base (junior to major mining houses) and similar survey-based revenue model.
• Sander Geophysics: Canadian airborne geophysical survey company operating fixed-wing aircraft for high-resolution magnetic, radiometric, and electromagnetic surveys. Closely comparable to Spectrem Air in terms of fixed-wing AEM platform, target customers (mining and exploration), and project-based delivery model.
• SkyTEM: Danish provider of helicopter-borne time-domain electromagnetic (TDEM) surveys for groundwater, mineral, and geotechnical exploration. Direct competitor to Spectrem Air in airborne EM survey services, particularly in markets where helicopter platforms are preferred.
• Quantec Geoscience: Provider of ground and airborne geophysical surveys (including Spartan MT and EM systems) for mineral exploration. Comparable in serving mining exploration clients with multi-method geophysical data, though more diversified into ground systems.

Broad incumbents

• DMT Geoscience: International engineering and consulting group offering airborne and ground geophysical surveys for mining and infrastructure projects. Comparable service offering to Spectrem Air, with broader diversification across other engineering disciplines.
• Fugro: Global geotechnical and geophysical survey contractor offering airborne, marine, and land-based surveys for mining, oil & gas, and infrastructure. Comparable to Spectrem Air as a buyer of airborne geophysical work, but with a much broader service portfolio and scale.
• CGG: Major geoscience company providing airborne and ground geophysical surveys, seismic, and geological data services. Competes for the same mineral exploration survey budgets as Spectrem Air, particularly for large multi-method survey tenders.

Others

• Teck Resources (Exploration Division): Major mining company that operates its own airborne geophysical survey capabilities in-house. Relevant as a customer/competitor hybrid—often the buyer of survey services but also capable of internalising work that would otherwise be outsourced to specialists like Spectrem Air.

Regional players

• New Resolution Geophysics: Australia-based airborne geophysical survey provider operating helicopter and fixed-wing platforms for mineral exploration. Comparable in scale and technology focus, but primarily serving the Australasia region rather than Spectrem's African base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/spectrem-air

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Spectrem Air