Company lists · Data refreshed September 2026

Top 16 Subsurface imaging companies based in South Africa

RevenueBase identified 54 subsurface imaging companies headquartered in South Africa as of September 2026 and tracks 394 professional contacts across them, including 106 with verified work emails. Johannesburg is the largest hub.

This list covers subsurface imaging companies headquartered in South Africa, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review
54Companies
394Contacts tracked
106Verified emails
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The 16 largest subsurface imaging companies based in South Africa

Ranked by team size
Top 16 of 54 subsurface imaging companies based in South Africa, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to subsurface imaging companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSunrella, South AfricaHQ checked Sep 22, 2026201-50068 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 22, 2026
2Indirect evidenceJohannesburg, South AfricaHQ checked Sep 22, 202651-20054 contacts →

Indirect evidence

“Digital Surveying is a specialist Directional, Geophysical, Geotechnical & Hydrogeological logging company servicing the mining, exploration, and civil engineering industries.”

Source: RevenueBase Database · checked Sep 22, 2026
3Indirect evidencePotchefstroom, South AfricaHQ checked Sep 22, 202611-5047 contacts →

Indirect evidence

“Open House Management Solutions is a South-African based, Geotechnical Engineering and Seismological services provider.”

Source: RevenueBase Database · checked Sep 22, 2026
4Indirect evidenceCullinan, South AfricaHQ checked Sep 22, 202651-20034 contacts →

Indirect evidence

“Our scope now includes the engineering, environmental and exploration sectors.”

Source: RevenueBase Database · checked Sep 22, 2026
5Indirect evidenceJohannesburg, South AfricaHQ checked Sep 22, 202651-20013 contacts →

Indirect evidence

“Mzansi Exploration Drilling, trading as Mzansi Exploration & Mining, was established in 2008 by Samkelo Thankslord Mlambo.”

Source: RevenueBase Database · checked Sep 22, 2026
6Indirect evidenceLanseria, South AfricaHQ checked Sep 22, 202611-509 contacts →

Indirect evidence

“SPECTREM AIR pioneered some of the industry’s most significant advances in airborne electromagnetic technology since its original development 35 years ago.”

Source: RevenueBase Database · checked Sep 22, 2026
7Indirect evidenceFourways, South AfricaHQ checked Sep 22, 202611-507 contacts →

Indirect evidence

“We are experts in offering complete products and services for your geological exploration, resources and reserves, mining, GIS, and project management needs.”

Source: RevenueBase Database · checked Sep 22, 2026
8Indirect evidenceBenoni, South AfricaHQ checked Sep 22, 202611-506 contacts →

Indirect evidence

“ORSCO (Pty) Ltd is an innovative company providing advanced solutions in pressurised pipeline diagnostics, advanced asset condition assessments, ground penetrating radar surveys…”

Source: RevenueBase Database · checked Sep 22, 2026
9Indirect evidenceJohannesburg, South AfricaHQ checked Sep 22, 202611-506 contacts →

Indirect evidence

“Subscan is a specialist sub-surface detection and mapping firm with the core focus being Utility detection, Concrete scanning and leak detection by using state of the art Ground…”

Source: RevenueBase Database · checked Sep 22, 2026
10Indirect evidencePretoria, South AfricaHQ checked Sep 22, 20261-106 contacts →

Indirect evidence

“Open Ground Resources is an expert geophysical consultancy with more than 20 years of experience specializing in the provision and utilization of geophysical techniques such as…”

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidenceBordeaux, South AfricaHQ checked Sep 22, 20261-103 contacts →

Indirect evidence

“DMT Kai Batla is a South African based company, headquartered in Germany under the DMT group which occupies 30 offices worldwide.”

Source: RevenueBase Database · checked Sep 22, 2026
12Indirect evidenceSilvertondale, South AfricaHQ checked Sep 22, 202611-502 contacts →

Indirect evidence

“Soil & Groundwater Remediation Services (Pty) Ltd, better known as SGRS specialises in borehole drilling and soil probing for environmental and geotechnical investigations…”

Source: RevenueBase Database · checked Sep 22, 2026
13Partial evidenceJohannesburg, South AfricaHQ checked Sep 22, 202611-502 contacts →

Partial evidence

“TerraCore Africa (formerly known as GeoSpectral Imaging) provides infrared drill core imaging services and image processing solutions focused primarily on geological applications.”

Source: RevenueBase Database · checked Sep 22, 2026
14Indirect evidenceCape Town, South AfricaHQ checked Sep 22, 20261-102 contacts →

Indirect evidence

“Xpotential was established in 2004 as a geophysical consultancy specialising in the processing and inversion of potential field data.”

Source: RevenueBase Database · checked Sep 22, 2026
15Indirect evidenceJohannesburg, South AfricaHQ checked Sep 22, 202611-501 contacts →

Indirect evidence

“We provide specialist inspection,monitoring and modelling services within the built environment industry focusing on 3 platforms: Ground Penetrating Radar, Drones and Engineering…”

Source: RevenueBase Database · checked Sep 22, 2026
16Indirect evidenceEkurhuleni, South AfricaHQ checked Sep 22, 20261-101 contacts →

Indirect evidence

“Expertise in applied 3D geological modelling and GIS, providing services to geoscience-related fields including the mineral exploration/mining industry, environmental geoscience…”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 16 of 54 subsurface imaging companies based in South Africa

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Subsurface imaging companies based in South Africa at a glance

As of Sep 22, 2026
26.9%Verified-email coverage
7.3Average contacts per company
11-50Median size (employees)
20.4%Largest-city concentration · Johannesburg
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
18
51-200
5
201-500
4
1,001-5,000
1

Email recency for this list is measured worldwide rather than for South Africa, so it is reported there. Company counts and contact totals on this page are exact for South Africa, over 54 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among subsurface imaging companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in South Africa whose own description of what they do matches “subsurface imaging companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names subsurface imaging companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among subsurface imaging companies, and records with no verified work email. Companies headquartered outside South Africa are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 106 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names subsurface imaging companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many subsurface imaging companies are there based in South Africa?

RevenueBase identified 54 subsurface imaging companies headquartered in South Africa as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Geogroup, headquartered in Gauteng, tops this list with the largest team on record.

Which city has the most subsurface imaging companies?

Johannesburg leads with 11 headquartered companies, followed by Gauteng (3) and Pretoria (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 106 verified decision-maker contacts tracked across these 54 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.