Company lists · Data refreshed September 2026

Top 25 Rock engineering consultants based in Johannesburg, South Africa

Name: Rock engineering 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 17, 2026 87 companies tracked

RevenueBase identified 87 rock engineering consultants headquartered in Johannesburg, South Africa as of September 2026 and tracks 1,290 professional contacts across them, including 479 with verified work emails. Johannesburg is the largest hub.

This list covers rock engineering 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 17, 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 17, 2026 86% judged on-target in blind review

87Companies

1,290Contacts tracked

479Verified emails

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The 25 largest rock engineering consultants based in Johannesburg, South Africa

Ranked by team size

Top 25 of 87 rock engineering consultants based in Johannesburg, South Africa, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to rock engineering 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	Jones & Wagener PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 17, 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 17, 2026
2	JG Afrika PTY LTD	Strong evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	201-500	221 contacts →
	Strong 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 17, 2026
3	Henry Fagan Consulting Engineers & Project Managers	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	201-500	99 contacts →
	Indirect evidence “At Henry Fagan Consulting Engineers & Project Managers, we are a 100% black-owned, design-focused firm with over 40 years of experience delivering innovative, sustainable, and…” Source: RevenueBase Database · checked Sep 17, 2026
4	Venn Milford Incorporated	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	51-200	30 contacts →
	Partial 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 17, 2026
5	L&s Consulting PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	51-200	26 contacts →
	Partial evidence “L&S Consulting (Pty) Ltd is involved in Structural and Civil Consulting Engineering, mainly for the private sector for industrial, retail and office developments.” Source: RevenueBase Database · checked Sep 17, 2026
6	Resultant Consulting Engineers	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	1-10	22 contacts →
	Partial 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 17, 2026
7	Rafuni PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “Rafuni offers Geotechnical, Geological and Environmental Consulting Services.” Source: RevenueBase Database · checked Sep 17, 2026
8	Bara Consulting LTD	Strong evidence	Johannesburg, South AfricaHQ checked Sep 17, 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 17, 2026
9	Rasnco Consulting Engineers	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	201-500	20 contacts →
	Indirect evidence “We at Rasnco Investments, are a vibrant and innovative company wholly owned by black Professionals, which was established at the beginning of 2017.” Source: RevenueBase Database · checked Sep 17, 2026
10	ADA Consulting Engineers	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial 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 17, 2026
11	Blackhead Consulting	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Blackhead Consulting (Pty) Ltd, established in 2004, is a black owned and managed consulting company that provides professional services in the engineering and project management…” Source: RevenueBase Database · checked Sep 17, 2026
12	Civilab PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	51-200	13 contacts →
	Partial evidence “Civilab is one of the most technically advanced civil and mining engineering laboratories in South Africa.” Source: RevenueBase Database · checked Sep 17, 2026
13	Projects And Industrial Engineering	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial 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 17, 2026
14	Sydwalt PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “SYDWALT (Pty) Ltd is an independent engineering Consulting firm, offering a broad range of professional services.” Source: RevenueBase Database · checked Sep 17, 2026
15	Carlisle & Associates	Strong evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	1-10	8 contacts →
	Strong evidence “Carlisle & Associates is a civil and structural engineering consultancy based in Johannesburg, South Africa.” Source: RevenueBase Database · checked Sep 17, 2026
16	Watson Consulting Engineers PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	11-50	7 contacts →
	Partial evidence “Engineering Excellence Our cutting-edge projects are carried out by a team of talented engineers who want to transform our communities.” Source: RevenueBase Database · checked Sep 17, 2026
17	Sanire	Strong evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	1-10	7 contacts →
	Strong evidence “An institute which actively promotes the South African Rock Engineering Profession.” Source: RevenueBase Database · checked Sep 17, 2026
18	PHB Engineers	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “PHB Engineers is a civil engineering consulting company based out of South Africa.” Source: RevenueBase Database · checked Sep 17, 2026
19	Rosnovanu & Associates	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence “Consulting Civil & Structural Engineers specialising in: Factories and Warehouses Apartment building developments Reinforced concrete Houses & residential projects Roads &…” Source: RevenueBase Database · checked Sep 17, 2026
20	Absolute Mining Consultants PTY LTD	Strong evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	1-10	5 contacts →
	Strong evidence “Abmincon is a specialized Mining Engineering Consultancy dedicated to providing customized and innovative solutions for our clients.” Source: RevenueBase Database · checked Sep 17, 2026
21	Thuthukani Electrical Control & Instrumentation PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	1-10	5 contacts →
	Partial evidence “Thuthukani Electrical Control & Instrumentation provides Electrical, Control & Instrumentation Engineering consulting and project management experience, a broad knowledge base…” Source: RevenueBase Database · checked Sep 17, 2026
22	Delusch Consulting Engineers	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	1-10	5 contacts →
	Partial evidence “Formerly Barry Devenish & Associates established in 1991, we have over 80 years combined engineering and construction experience including specialised skills in structural steel…” Source: RevenueBase Database · checked Sep 17, 2026
23	Prysm Resources PTY LTD	Strong evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	1-10	3 contacts →
	Strong evidence “Prysm Resource is a privately owned and operated consultancy, engineering and manufacturing company, providing independent, strategic and tactical advice and personalized…” Source: RevenueBase Database · checked Sep 17, 2026
24	Lines, Smolka And Associates	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “Lines, Smolka and Associates has been providing a range of professional structural engineering and project management services for more than 25 years.” Source: RevenueBase Database · checked Sep 17, 2026
25	TVNA	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	11-50	3 contacts →
	Partial evidence “Consulting Civil and Structural Engineering, Concrete repair, Facade Repair, Carbon Fibre Strengthening, Steel Structures, Building Audits, Inspections.” Source: RevenueBase Database · checked Sep 17, 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: rock engineering 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 rock engineering consultants.
Partial evidence: Its own public description names part of rock engineering consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name rock engineering 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 87 rock engineering consultants based in Johannesburg, South Africa

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Rock engineering consultants based in Johannesburg, South Africa at a glance

As of Sep 17, 2026

37.1%Verified-email coverage

14.8Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Johannesburg

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 87 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 rock engineering 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 “rock engineering 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 rock engineering 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 rock engineering 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, 479 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 17, 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.

Rock engineering consultants by metro in South Africa

Rock engineering consultants in Johannesburg87
Rock engineering consultants in Pretoria53
Rock engineering consultants in Cape Town50
Rock engineering consultants in City Of Tshwane34
Rock engineering consultants in Durban26

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 rock engineering 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 rock engineering consultants are there based in Johannesburg, South Africa?

RevenueBase identified 87 rock engineering 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?

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

Which city has the most rock engineering consultants?

Johannesburg leads with 87 headquartered companies, followed by Pretoria (53) and Cape Town (50).

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 479 verified decision-maker contacts tracked across these 87 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 17, 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.