Company lists · Data refreshed September 2026

Top 25 Subsurface technical consulting firms based in South Africa

Name: Subsurface technical consulting firms based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 148 companies tracked

RevenueBase identified 148 subsurface technical consulting firms headquartered in South Africa as of September 2026 and tracks 1,492 professional contacts across them, including 500 with verified work emails. Johannesburg is the largest hub.

This list covers subsurface technical consulting firms 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 29, 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 29, 2026 86% judged on-target in blind review

148Companies

1,492Contacts tracked

500Verified emails

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The 25 largest subsurface technical consulting firms based in South Africa

Ranked by team size

Top 25 of 148 subsurface technical consulting firms based in South Africa, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to subsurface technical consulting firms: 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	Partial evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	51-200	228 contacts →
	Partial evidence “Jones & Wagener is a specialist firm of consulting engineers and scientists based in South Africa.” Source: RevenueBase Database · checked Sep 29, 2026
2	The MSA Group	Partial evidence	Victory Park, South AfricaHQ checked Sep 29, 2026	51-200	110 contacts →
	Partial evidence “The MSA Group is a leading provider of exploration, geology, mineral resource and reserve estimation, mining and environmental consulting services to the mining industry.” Source: RevenueBase Database · checked Sep 29, 2026
3	Semane Engineering Solutions PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	501-1,000	71 contacts →
	Partial 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 29, 2026
4	Geogroup	Indirect evidence	Sunrella, South AfricaHQ checked Sep 29, 2026	201-500	68 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
5	VBKOM	Indirect evidence	Centurion, South AfricaHQ checked Sep 29, 2026	11-50	60 contacts →
	Indirect evidence “At VBKOM, we aim to support organizations within the mining and capital intensive industries to make the best possible decisions through our leadership, expertise and innovative…” Source: RevenueBase Database · checked Sep 29, 2026
6	Geosure PTY LTD	Indirect evidence	Durban, South AfricaHQ checked Sep 29, 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 29, 2026
7	Open House Management Solutions	Indirect evidence	Potchefstroom, South AfricaHQ checked Sep 29, 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 29, 2026
8	Singo Consulting	Partial evidence	Emalahleni, South AfricaHQ checked Sep 29, 2026	51-200	44 contacts →
	Partial 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 29, 2026
9	A & B Global Mining	Indirect evidence	Centurion, South AfricaHQ checked Sep 29, 2026	51-200	42 contacts →
	Indirect evidence “ABGM is a leading niche mining consultancy and provides a world-class service to our clients.” Source: RevenueBase Database · checked Sep 29, 2026
10	Franki Africa PTY LTD	Indirect evidence	Ottery, South AfricaHQ checked Sep 29, 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 29, 2026
11	Dwyka Mining Services	Partial evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	11-50	36 contacts →
	Partial evidence “Dwyka Mining Services is an industry experienced, results driven company which offers technical solutions and consultancy to match a variety of mining environments.” Source: RevenueBase Database · checked Sep 29, 2026
12	Geotheta Consulting Engineers And Scientists	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	51-200	28 contacts →
	Indirect evidence “Tailings management today requires more than engineering excellence, it demands independent oversight, structured governance, and defensible risk frameworks.” Source: RevenueBase Database · checked Sep 29, 2026
13	Sound Mining	Indirect evidence	Edenburg, South AfricaHQ checked Sep 29, 2026	11-50	26 contacts →
	Indirect evidence “Founded in 2004, Sound Mining is an international mining consultancy that provides services to the minerals industry across six continents.” Source: RevenueBase Database · checked Sep 29, 2026
14	Minxcon	Indirect evidence	Little Falls, South AfricaHQ checked Sep 29, 2026	11-50	25 contacts →
	Indirect evidence “The Minxcon Group is a multi-faceted South African advisory company offering a wide range of exploration, resource, mining, environmental, social, metallurgical, financial…” Source: RevenueBase Database · checked Sep 29, 2026
15	Rafuni PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	11-50	22 contacts →
	Partial evidence “Rafuni offers Geotechnical, Geological and Environmental Consulting Services.” Source: RevenueBase Database · checked Sep 29, 2026
16	Bara Consulting LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	11-50	21 contacts →
	Partial 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 29, 2026
17	Et-Global	Partial evidence	Cape Town, South AfricaHQ checked Sep 29, 2026	11-50	15 contacts →
	Partial evidence “ET-Global is a specialised engineering technical services company servicing local and international mining and offshore industries.” Source: RevenueBase Database · checked Sep 29, 2026
18	Isithelo	Strong evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	11-50	14 contacts →
	Strong evidence “Isithelo Background : Previously the technical department of Anglo American’s corporate office, the consulting team have combined their multi-discipinary engineering, mining…” Source: RevenueBase Database · checked Sep 29, 2026
19	CEM Mining	Partial evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	11-50	12 contacts →
	Partial evidence “At CEM Mining, we are your trusted partner in geological exploration, mine planning, technical advisory, and digital transformation.” Source: RevenueBase Database · checked Sep 29, 2026
20	Fairbrother Geotechnical Engineering	Indirect evidence	Cape Town, South AfricaHQ checked Sep 29, 2026	51-200	10 contacts →
	Indirect evidence “Fairbrother Geotechnical Engineering is a leading South African geotechnical contractor delivering specialised ground engineering solutions to infrastructure, energy, commercial…” Source: RevenueBase Database · checked Sep 29, 2026
21	Groundwork Consulting	Partial evidence	Sandton, South AfricaHQ checked Sep 29, 2026	11-50	10 contacts →
	Partial evidence “Groundwork Consulting is a leading geotechnical consulting firm, harnessing cutting-edge technologies to provide innovative solutions for challenges in both the mining and civil…” Source: RevenueBase Database · checked Sep 29, 2026
22	Aqua Earth	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	11-50	8 contacts →
	Indirect evidence “Aqua Earth celebrates more than 20 years of operation and prides itself on having a dynamic team of specialists in Hydrogeology, also identified as Groundwater, as well as…” Source: RevenueBase Database · checked Sep 29, 2026
23	B&s Geological	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	1-10	8 contacts →
	Indirect evidence “At B&S Geological we are passionate about applying our geological expertise and mastery of cutting-edge modelling software to make a tangible difference.” Source: RevenueBase Database · checked Sep 29, 2026
24	Earthlab Technical Division	Indirect evidence	Fourways, South AfricaHQ checked Sep 29, 2026	11-50	7 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 29, 2026
25	Gemecs PTY LTD	Indirect evidence	Middelburg, South AfricaHQ checked Sep 29, 2026	1-10	6 contacts →
	Indirect evidence “We are independent geological consultants providing a world class service in mineral resource management • Provide geological modelling services • Provide experienced and…” Source: RevenueBase Database · checked Sep 29, 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 technical consulting firms. 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 technical consulting firms.
Partial evidence: Its own public description names part of subsurface technical consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsurface technical consulting firms. 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 148 subsurface technical consulting firms based in South Africa

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Subsurface technical consulting firms based in South Africa at a glance

As of Sep 29, 2026

33.5%Verified-email coverage

10.1Average contacts per company

1-10Median size (employees)

18.2%Largest-city concentration · Johannesburg

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

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 148 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 technical consulting firms, 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 technical consulting firms”. 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 technical consulting firms), 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 technical consulting firms, 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, 500 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 29, 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 technical consulting firms by metro

Subsurface technical consulting firms in Johannesburg27

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 technical consulting firms, 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 technical consulting firms are there based in South Africa?

RevenueBase identified 148 subsurface technical consulting firms 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 technical consulting firms?

Johannesburg leads with 27 headquartered companies, followed by Pretoria (13) and Cape Town (10).

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 500 verified decision-maker contacts tracked across these 148 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 29, 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.