Company lists · Data refreshed September 2026

Top 12 Subsurface mapping companies based in South Africa

RevenueBase identified 38 company matches for subsurface mapping companies associated with South Africa as of September 2026 and tracks 169 professional contacts across them, including 53 with verified work emails. Johannesburg is the largest hub.

This list covers company matches for subsurface mapping companies associated with South Africa, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 22, 2026 How this list was built
38Companies
169Contacts tracked
53Verified emails
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The 12 largest subsurface mapping companies based in South Africa

Ranked by team size
Top 12 of 38 company matches for subsurface mapping companies based in South Africa, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 22, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPotchefstroom, South AfricaHQ recorded Sep 22, 202611-5047 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2Exact matchJohannesburg, South AfricaHQ recorded Sep 22, 20261-108 contacts →

Exact match

“At B&S Geological we are passionate about applying our geological expertise and mastery of cutting-edge modelling software to make a tangible difference.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchFourways, South AfricaHQ recorded Sep 22, 202611-507 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4Exact matchBenoni, South AfricaHQ recorded Sep 22, 202611-506 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchJohannesburg, South AfricaHQ recorded Sep 22, 202611-506 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchJohannesburg, South AfricaHQ recorded Sep 22, 20261-106 contacts →

Exact match

“At Africa Utility Locators we pride ourselves in following International Best Practises for the locating of hidden underground services.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchPretoria, South AfricaHQ recorded Sep 22, 20261-106 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchBordeaux, South AfricaHQ recorded Sep 22, 20261-103 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchJohannesburg, South AfricaHQ recorded Sep 22, 20261-102 contacts →

Exact match

“GOZO is a highly experienced geological and environmental company, specialising in remote sensing, hydrogeology and environmental projects.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
10Exact matchCape Town, South AfricaHQ recorded Sep 22, 20261-102 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchJohannesburg, South AfricaHQ recorded Sep 22, 202611-501 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchEkurhuleni, South AfricaHQ recorded Sep 22, 20261-101 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase

Showing 12 of 38 subsurface mapping companies based in South Africa

See the full list, filter by size, metro and specialty, and access 53 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Subsurface mapping companies based in South Africa at a glance

As of Sep 22, 2026
31.4%Verified-email coverage
4.4Average contacts per company
1-10Median size (employees)
23.7%Largest-city concentration · Johannesburg
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
25
11-50
11
201-500
2

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 38 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with South Africa whose business descriptions match “subsurface mapping companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 53 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “subsurface mapping companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 38 company matches for subsurface mapping companies associated with South Africa as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Open House Management Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most subsurface mapping companies?

Johannesburg leads with 9 company records, followed by Cape Town (3) and Potchefstroom (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 53 professional contacts with verified work emails tracked across these 38 companies; direct dials are available where recorded.

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 SmartSearch, 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.