Company lists · Data refreshed September 2026

Top 25 Geological consultants based in Johannesburg, South Africa

Name: Geological consultants based in Johannesburg, South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 144 companies tracked

RevenueBase identified 144 geological consultants headquartered in Johannesburg, South Africa as of September 2026 and tracks 5,669 professional contacts across them, including 2,371 with verified work emails. Johannesburg is the largest hub.

This list covers geological consultants headquartered in Johannesburg, 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 21, 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 21, 2026 86% judged on-target in blind review

144Companies

5,669Contacts tracked

2,371Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest geological consultants based in Johannesburg, South Africa

Ranked by team size

Top 25 of 144 geological consultants based in Johannesburg, South Africa, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to geological consultants: 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	DRA Global	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1,001-5,000	2,180 contacts →
	Indirect evidence “DRA Global Limited (DRA or the Group) is an international multi-disciplinary engineering, project delivery and operations management group, predominantly focused on the mining…” Source: RevenueBase Database · checked Sep 21, 2026
2	Fraser Alexander	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1,001-5,000	1,232 contacts →
	Indirect evidence “Fraser Alexander has been providing customised solutions to the mining industry since 1912.” Source: RevenueBase Database · checked Sep 21, 2026
3	Jones & Wagener PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 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 21, 2026
4	JG Afrika PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	201-500	221 contacts →
	Partial evidence “JG Afrika, a leading multi-disciplinary engineering and environmental consultancy in South Africa, provides civil and structural engineering and environmental consulting services…” Source: RevenueBase Database · checked Sep 21, 2026
5	Rosond	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1,001-5,000	200 contacts →
	Indirect evidence “ROSOND provides fast, efficient, safe and cost-effective drilling and grouting services to mining and exploration industries throughout Africa.” Source: RevenueBase Database · checked Sep 21, 2026
6	RSV Group	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	201-500	65 contacts →
	Partial evidence “The RSV group of Linked Enterprises is a group of well-reputed South African-based Project Management and Design (PM & D) consultancies, specialising in the minerals and mining…” Source: RevenueBase Database · checked Sep 21, 2026
7	Fraser Mcgill	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	56 contacts →
	Indirect evidence “At Fraser McGill we are 100% mining sector focused and with locations in Johannesburg South Africa, Perth Australia and Gaborone Botswana we are active in Southern Africa and the…” Source: RevenueBase Database · checked Sep 21, 2026
8	Digital Surveying	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	54 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 21, 2026
9	LEOKA	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	49 contacts →
	Indirect evidence “We offer expertise in multi-disciplinary engineering, project management and advisory services.” Source: RevenueBase Database · checked Sep 21, 2026
10	Synergy Global Consulting LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	37 contacts →
	Indirect evidence “Synergy Global Consulting Ltd (Synergy) is an independent international consulting company that works with natural resource and infrastructure sectors operating in challenging…” Source: RevenueBase Database · checked Sep 21, 2026
11	Dwyka Mining Services	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 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 21, 2026
12	Venn Milford Incorporated	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 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 21, 2026
13	Metsop PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	27 contacts →
	Indirect evidence “We are a team of Metallurgists that offer Metallurgical Products and Solutions.” Source: RevenueBase Database · checked Sep 21, 2026
14	Resultant Consulting Engineers	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 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 21, 2026
15	Rafuni PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	22 contacts →
	Partial evidence “Rafuni offers Geotechnical, Geological and Environmental Consulting Services.” Source: RevenueBase Database · checked Sep 21, 2026
16	Bara Consulting LTD	Strong evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	21 contacts →
	Strong 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 21, 2026
17	ADA Consulting Engineers	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	18 contacts →
	Indirect evidence “ADA Consulting Engineers offers professional consulting engineering services to clients in the development of industrial, commercial and public projects in the civil and…” Source: RevenueBase Database · checked Sep 21, 2026
18	The Mineral Corporation	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “The Mineral Corporation is a leading senior advisor to the African and International minerals business, providing a unique combination of technical and financial skills and…” Source: RevenueBase Database · checked Sep 21, 2026
19	Environmental Impact Management Services PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “Environmental Impact Management Services (Pty) Ltd (EIMS) was founded in 1993 and has steadily grown to be a significant player in the environmental management consulting industry…” Source: RevenueBase Database · checked Sep 21, 2026
20	Nsovo Environmental Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “Our specialist area of focus is the assessment of multifaceted projects, including the establishment of linear developments, bulk infrastructure, power generation and…” Source: RevenueBase Database · checked Sep 21, 2026
21	Civilab PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	13 contacts →
	Indirect evidence “Civilab is one of the most technically advanced civil and mining engineering laboratories in South Africa.” Source: RevenueBase Database · checked Sep 21, 2026
22	Mzansi Exploration, Drilling & Mining	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	13 contacts →
	Indirect evidence “Mzansi Exploration Drilling, trading as Mzansi Exploration & Mining, was established in 2008 by Samkelo Thankslord Mlambo.” Source: RevenueBase Database · checked Sep 21, 2026
23	CEM Mining	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 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 21, 2026
24	JIM Porter Mining Consulting Jpmc SA	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	11 contacts →
	Partial evidence “JPMC is a specialist consultancy for scalable mining and process strategies.” Source: RevenueBase Database · checked Sep 21, 2026
25	Projects And Industrial Engineering	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Projects & Industrial Engineering is an ISO 9001:2008 accredited professional South African multidisciplinary consulting engineering, design and project Management Company.” Source: RevenueBase Database · checked Sep 21, 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: geological consultants. 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 geological consultants.
Partial evidence: Its own public description names part of geological consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geological consultants. 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 144 geological consultants based in Johannesburg, South Africa

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,371 reachable decision-makers.

Free signup · no credit card

View the full list →

Geological consultants based in Johannesburg, South Africa at a glance

As of Sep 21, 2026

41.8%Verified-email coverage

39.4Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Johannesburg

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole South Africa list rather than for Johannesburg, so it is reported there. Company counts and contact totals on this page are exact for Johannesburg, over 144 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 geological consultants, 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 Johannesburg, South Africa whose own description of what they do matches “geological consultants”. 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 geological consultants), 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 geological consultants, and records with no verified work email. Companies headquartered outside Johannesburg 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, 2,371 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 21, 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.

Geological consultants by metro in South Africa

Geological consultants in Johannesburg144
Geological consultants in Pretoria65
Geological consultants in Cape Town62
Geological consultants in City Of Tshwane33
Geological consultants in Centurion28

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 geological consultants, 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 geological consultants are there based in Johannesburg, South Africa?

RevenueBase identified 144 geological consultants headquartered in Johannesburg, 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?

DRA Global, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most geological consultants?

Johannesburg leads with 144 headquartered companies, followed by Pretoria (65) and Cape Town (62).

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 2,371 verified decision-maker contacts tracked across these 144 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 144 geological consultants based in Johannesburg, South Africa. Start with a free account, no credit card.

Download this list →

Related lists

Geological consultants by geography

Browse the directory

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.