Company lists · Data refreshed September 2026

Top 25 Subsurface analysis companies based in South Africa

Name: Subsurface analysis companies based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 210 companies tracked

RevenueBase identified 210 subsurface analysis companies headquartered in South Africa as of September 2026 and tracks 2,268 professional contacts across them, including 832 with verified work emails. Johannesburg is the largest hub.

This list covers subsurface analysis 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 19, 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 19, 2026 86% judged on-target in blind review

210Companies

2,268Contacts tracked

832Verified emails

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The 25 largest subsurface analysis companies based in South Africa

Ranked by team size

Top 25 of 210 subsurface analysis companies based in South Africa, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to subsurface analysis 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Jones & Wagener PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	228 contacts →
	Indirect evidence “Jones & Wagener is a specialist firm of consulting engineers and scientists based in South Africa.” Source: RevenueBase Database · checked Sep 19, 2026
2	Knight Piesold Southern Africa	Indirect evidence	Sandton, South AfricaHQ checked Sep 19, 2026	201-500	193 contacts →
	Indirect evidence “Knight Piésold is a global consulting firm that provides specialised services to the mining, power, water resources and infrastructure industries.” Source: RevenueBase Database · checked Sep 19, 2026
3	Soillab	Indirect evidence	Pretoria, South AfricaHQ checked Sep 19, 2026	201-500	77 contacts →
	Indirect evidence “The Soillab staff compliment includes Engineers, Technologists and Technicians, as well as skilled and semi-skilled operators.” Source: RevenueBase Database · checked Sep 19, 2026
4	Semane Engineering Solutions PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	501-1,000	71 contacts →
	Indirect evidence “Semane Engineering Solutions (Pty) Ltd is an independent South African multi-disciplinary consulting company that provides project management and engineering solutions in…” Source: RevenueBase Database · checked Sep 19, 2026
5	Lukhozi Consulting Engineers PTY LTD	Indirect evidence	East London, South AfricaHQ checked Sep 19, 2026	51-200	69 contacts →
	Indirect evidence “Lukhozi Consulting Engineers (Pty) Ltd is a Level 1 B-BBEE contributor and a leading multi-disciplinary professional engineering consultancy that offers a professional service…” Source: RevenueBase Database · checked Sep 19, 2026
6	Geogroup	Indirect evidence	Sunrella, South AfricaHQ checked Sep 19, 2026	201-500	68 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
7	G4 Mining And Civils PTY LTD	Indirect evidence	Benoni, South AfricaHQ checked Sep 19, 2026	51-200	58 contacts →
	Indirect evidence “Based in Benoni, Gauteng, G4 Mining and Civils (Pty) Ltd is a premier South African construction company specializing in the mining infrastructure sector.” Source: RevenueBase Database · checked Sep 19, 2026
8	Geosure PTY LTD	Indirect evidence	Durban, South AfricaHQ checked Sep 19, 2026	51-200	57 contacts →
	Indirect evidence “Since the company's inception in 1992, Geosure has established a formidable reputation in Southern African Geotechnics.” Source: RevenueBase Database · checked Sep 19, 2026
9	Open House Management Solutions	Indirect evidence	Potchefstroom, South AfricaHQ checked Sep 19, 2026	11-50	47 contacts →
	Indirect evidence “Open House Management Solutions is a South-African based, Geotechnical Engineering and Seismological services provider.” Source: RevenueBase Database · checked Sep 19, 2026
10	Singo Consulting	Indirect evidence	Emalahleni, South AfricaHQ checked Sep 19, 2026	51-200	44 contacts →
	Indirect evidence “Singo Consulting (Pty) Ltd is a private independent research consultancy and advisory company based in eMalahleni (Witbank), holding no equity in any project and is owned by the…” Source: RevenueBase Database · checked Sep 19, 2026
11	Mukona Group	Indirect evidence	Midrand, South AfricaHQ checked Sep 19, 2026	51-200	41 contacts →
	Indirect evidence “Mukona Group is a holding company of Mukona Consulting Engineers and Mukona Geotechnics, offering a full spectrum of civil engineering consulting services and geotechnical…” Source: RevenueBase Database · checked Sep 19, 2026
12	Franki Africa PTY LTD	Indirect evidence	Ottery, South AfricaHQ checked Sep 19, 2026	51-200	37 contacts →
	Indirect evidence “Franki is the oldest and most established specialist geotechnical contractor in Sub-Saharan Africa.” Source: RevenueBase Database · checked Sep 19, 2026
13	Umvoto	Indirect evidence	Cape Town, South AfricaHQ checked Sep 19, 2026	11-50	37 contacts →
	Indirect evidence “Umvoto is an earth sciences consultancy, specializing in environmental resource development, management and sustainability.” Source: RevenueBase Database · checked Sep 19, 2026
14	Phoenecian Group PTY Limited	Indirect evidence	Tembisa, South AfricaHQ checked Sep 19, 2026	201-500	34 contacts →
	Indirect evidence “Phoenecian Group is a dynamic demolition, civil, building and geotechnical contractor, with an unmatched track record in the private and public sector.” Source: RevenueBase Database · checked Sep 19, 2026
15	Labco Southern Africa PTY LTD	Indirect evidence	Port Elizabeth, South AfricaHQ checked Sep 19, 2026	201-500	32 contacts →
	Indirect evidence “Labco provides laboratory testing services in the environmental and civil engineering industries.” Source: RevenueBase Database · checked Sep 19, 2026
16	Geoss South Africa	Indirect evidence	Stellenbosch, South AfricaHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “GEOSS, established on 1 March 2001, specializes in all aspects of hydrogeology, including: • Groundwater exploration (borehole siting, drilling supervision with logging, pumping…” Source: RevenueBase Database · checked Sep 19, 2026
17	Kimopax Group	Indirect evidence	Midrand, South AfricaHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “Kimopax is a company rendering specialized services in selected earth and environmental sciences, engineering disciplines and related project management functions.” Source: RevenueBase Database · checked Sep 19, 2026
18	Venn Milford Incorporated	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	30 contacts →
	Indirect evidence “Since 1947, we have built a reputation as cutting-edge visionaries who deliver quality multi-disciplinary projects and consulting services to clients in the mining, engineering…” Source: RevenueBase Database · checked Sep 19, 2026
19	Project Management International	Indirect evidence	South AfricaHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “Project Management International (PMI) is a dynamic project management company specialising in tailor-made Marine Construction, Engineering Services and Survey & Site…” Source: RevenueBase Database · checked Sep 19, 2026
20	Sotiralis Consulting Engineers	Indirect evidence	Faerie Glen, South AfricaHQ checked Sep 19, 2026	11-50	28 contacts →
	Indirect evidence “About us: Sotiralis Consulting Engineers (Pty) Ltd was established in 2007 and is the successor of Sotiralis Consulting (Pty) Ltd (trading as Sotiralis & Associates since 1985).” Source: RevenueBase Database · checked Sep 19, 2026
21	Peragage	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “PeraGage is a Leading, Trusted and the Preferred specialist firm of geo-consultants including hydrogeologists, geotechnical engineers and engineering geologists operating…” Source: RevenueBase Database · checked Sep 19, 2026
22	A19 Consulting Engineers	Indirect evidence	Cape Town, South AfricaHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Over the past 20+ years we have successfully delivered services to clients in a wide variety of residential, commercial, and industrial projects with scopes ranging from small to…” Source: RevenueBase Database · checked Sep 19, 2026
23	Resultant Consulting Engineers	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	1-10	22 contacts →
	Indirect evidence “Resultant Consulting Engineers is a dynamic engineering firm specialising in structural design in the mining and heavy industrial sectors.” Source: RevenueBase Database · checked Sep 19, 2026
24	Rafuni PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Rafuni offers Geotechnical, Geological and Environmental Consulting Services.” Source: RevenueBase Database · checked Sep 19, 2026
25	Bara Consulting LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “Bara Consulting is a boutique geological, engineering, ESG and mineral processing consultancy owned and operated by experienced industry professionals and offers high quality…” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: subsurface analysis companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names subsurface analysis companies.
Partial evidence: Its own public description names part of subsurface analysis companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsurface analysis companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 210 subsurface analysis companies based in South Africa

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Subsurface analysis companies based in South Africa at a glance

As of Sep 19, 2026

36.7%Verified-email coverage

10.8Average contacts per company

1-10Median size (employees)

17.6%Largest-city concentration · Johannesburg

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

114

11-50

51-200

201-500

501-1,000

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 210 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 analysis 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 analysis 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 analysis 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 analysis 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, 832 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 19, 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.

Subsurface analysis companies by metro

Subsurface analysis companies in Johannesburg37

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 analysis 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 analysis companies are there based in South Africa?

RevenueBase identified 210 subsurface analysis 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?

Jones & Wagener PTY LTD, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most subsurface analysis companies?

Johannesburg leads with 37 headquartered companies, followed by Cape Town (13) and Pretoria (13).

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 832 verified decision-maker contacts tracked across these 210 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 19, 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.