Company lists · Data refreshed September 2026

Top 25 Mining geology consultants based in the United States

Name: Mining geology consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 552 companies tracked

RevenueBase identified 552 mining geology consultants headquartered in the United States as of September 2026 and tracks 12,301 professional contacts across them, including 4,264 with verified work emails. Houston is the largest hub.

This list covers mining geology consultants headquartered in the United States, 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

552Companies

12,301Contacts tracked

4,264Verified emails

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The 25 largest mining geology consultants based in the United States

Ranked by team size

Top 25 of 552 mining geology consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to mining geology 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	Boart Longyear	Indirect evidence	West Valley City, UT, United StatesHQ checked Sep 17, 2026	5,001-10,000	3,285 contacts →
	Indirect evidence “Established in 1890, Boart Longyear is the world’s leading innovative provider of drilling services, manufacturer of productivity-driven drilling equipment and performance…” Source: RevenueBase Database · checked Sep 17, 2026
2	Knight Piesold	Partial evidence	Denver, CO, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,231 contacts →
	Partial evidence “Knight Piésold is an employee-owned, global consulting firm providing specialist services to the mining, power, water resources, and infrastructure industries.” Source: RevenueBase Database · checked Sep 17, 2026
3	Barr Engineering CO	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,088 contacts →
	Indirect evidence “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Source: RevenueBase Database · checked Sep 17, 2026
4	GMS Mine Repair & Maintenance	Indirect evidence	Mountain Lake Park, MD, United StatesHQ checked Sep 17, 2026	1,001-5,000	462 contacts →
	Indirect evidence “GMS Mine Repair & Maintenance is the North American leader in underground and surface mine contracting, maintenance and services.” Source: RevenueBase Database · checked Sep 17, 2026
5	Minova	Partial evidence	Greenwood Village, CO, United StatesHQ checked Sep 17, 2026	1,001-5,000	449 contacts →
	Partial evidence “Minova is an industry leader of ground support and geotechnical solutions for mining, tunnelling and surface ground engineering projects.” Source: RevenueBase Database · checked Sep 17, 2026
6	P&c Recruiting HR	Partial evidence	North America, United StatesHQ checked Sep 17, 2026	n/a	282 contacts →
	Partial evidence “People solutions in mining, green energy and related industrial sectors - executive and technical engineering/professional recruiting and human resources services throughout the…” Source: RevenueBase Database · checked Sep 17, 2026
7	Intera Incorporated	Partial evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	201-500	259 contacts →
	Partial evidence “Established in 1974, INTERA is a geosciences and engineering consulting firm focused on providing water resources and supply, environmental, mining, radioactive waste isolation…” Source: RevenueBase Database · checked Sep 17, 2026
8	Small Mine Development, LLC	Indirect evidence	Boise, ID, United StatesHQ checked Sep 17, 2026	201-500	179 contacts →
	Indirect evidence “Small Mine Development builds and operates America’s underground mines.” Source: RevenueBase Database · checked Sep 17, 2026
9	Ensero Solutions	Indirect evidence	Fort Collins, CO, United StatesHQ checked Sep 17, 2026	51-200	129 contacts →
	Indirect evidence “Ensero Solutions is an environmental consulting and remediation business with specific expertise in environmental assessments and permitting solutions, mine water management…” Source: RevenueBase Database · checked Sep 17, 2026
10	Geo-Logic Associates, INC	Indirect evidence	Ontario, CA, United StatesHQ checked Sep 17, 2026	201-500	106 contacts →
	Indirect evidence “Geo-Logic Associates, Inc.(GLA) is an employee-owned, multidisciplinary consulting firm.” Source: RevenueBase Database · checked Sep 17, 2026
11	Rangefront Mining Services	Partial evidence	Elko, NV, United StatesHQ checked Sep 17, 2026	51-200	79 contacts →
	Partial evidence “Rangefront exists to serve your mining or exploration project in the most efficient, advanced, and forward-thinking way.” Source: RevenueBase Database · checked Sep 17, 2026
12	MES Mining	Partial evidence	Sandy, UT, United StatesHQ checked Sep 17, 2026	11-50	77 contacts →
	Partial evidence “Mining & Environmental Services LLC provides specialized technical expertise, at a high level of excellence, to support our Clients throughout the full process cycle of…” Source: RevenueBase Database · checked Sep 17, 2026
13	Collier Consulting & Collier Geophysics	Indirect evidence	Stephenville, TX, United StatesHQ checked Sep 17, 2026	51-200	71 contacts →
	Indirect evidence “Geoscience • Engineering • Geophysics Collier Consulting, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
14	Tierra Group International, LTD	Indirect evidence	Lakewood, CO, United StatesHQ checked Sep 17, 2026	11-50	66 contacts →
	Indirect evidence “Tierra Group International, Ltd.(Tierra Group) was formed in January 2012 by Matt Fuller, CPG and Pete Kowalewski, P.E.” Source: RevenueBase Database · checked Sep 17, 2026
15	John T. Boyd Company	Strong evidence	Canonsburg, PA, United StatesHQ checked Sep 17, 2026	51-200	65 contacts →
	Strong evidence “Since 1943, BOYD mining consultants have provided advisory services to a diverse mix of domestic and international clientele: mining companies, investors, financial institutions…” Source: RevenueBase Database · checked Sep 17, 2026
16	Terra Guidance, LLC	Partial evidence	Englewood, CO, United StatesHQ checked Sep 17, 2026	51-200	59 contacts →
	Partial evidence “Terra Guidance provides geological analysis remotely, onsite, and in-house.” Source: RevenueBase Database · checked Sep 17, 2026
17	Engineering Analytics, INC	Indirect evidence	Fort Collins, CO, United StatesHQ checked Sep 17, 2026	201-500	56 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
18	Westward	Strong evidence	Boerne, TX, United StatesHQ checked Sep 17, 2026	11-50	55 contacts →
	Strong evidence “Westward Environmental (WESTWARD) delivers multidisciplinary consulting services in engineering, environmental sciences, geology and mining, health and safety, and natural…” Source: RevenueBase Database · checked Sep 17, 2026
19	Call & Nicholas	Strong evidence	Tucson, AZ, United StatesHQ checked Sep 17, 2026	51-200	52 contacts →
	Strong evidence “CALL & NICHOLAS (CNI) is an international mining consulting firm that specializes in geological engineering, geotechnical engineering, and hydrogeology.” Source: RevenueBase Database · checked Sep 17, 2026
20	ESE Partners	Indirect evidence	Katy, TX, United StatesHQ checked Sep 17, 2026	51-200	52 contacts →
	Indirect evidence “Environmental Science and Engineering Partners (ESE) is Texas’ Most Trusted Environmental Experts, Comprehensive by Design.” Source: RevenueBase Database · checked Sep 17, 2026
21	Associated Earth Sciences, Inc. Aesi	Partial evidence	Kirkland, WA, United StatesHQ checked Sep 17, 2026	51-200	50 contacts →
	Partial evidence “In the early 1980s, geologist Louis Lepp had a vision to start a local geologic/geotechnical engineering consulting company by combining and coordinating several of the…” Source: RevenueBase Database · checked Sep 17, 2026
22	Field GEO Services, INC	Indirect evidence	Grand Junction, CO, United StatesHQ checked Sep 17, 2026	51-200	47 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
23	Riner Engineering, Inc., A UES Company	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	47 contacts →
	Indirect evidence “Riner Engineering became part of the UES family of companies in June 2023, combining our local expertise with UES’s nationwide presence and resources.” Source: RevenueBase Database · checked Sep 17, 2026
24	Miller Contracting Services, LLC	Indirect evidence	Carrier Mills, IL, United StatesHQ checked Sep 17, 2026	51-200	43 contacts →
	Indirect evidence “Miller Contracting is a family-owned mine construction company headquartered in Southern Illinois, with branch offices in Elko, Nevada, and Evansville, Indiana.” Source: RevenueBase Database · checked Sep 17, 2026
25	RGH Consultants	Strong evidence	Santa Rosa, CA, United StatesHQ checked Sep 17, 2026	11-50	39 contacts →
	Strong evidence “RGH Consultants was founded in 1991 as a full service firm with expertise in geotechnical engineering, engineering geology, and construction observation and testing.” 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: mining geology 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 mining geology consultants.
Partial evidence: Its own public description names part of mining geology consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name mining geology 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 552 mining geology consultants based in the United States

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Mining geology consultants based in the United States at a glance

As of Sep 17, 2026

34.7%Verified-email coverage

22.3Average contacts per company

1-10Median size (employees)

5.3%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

334

11-50

158

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 552 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 mining geology 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 the United States whose own description of what they do matches “mining geology 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 mining geology 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 mining geology consultants, and records with no verified work email. Companies headquartered outside United States 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, 4,264 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.

Mining geology consultants by metro

Mining geology consultants in Houston29

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 mining geology 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 mining geology consultants are there based in the United States?

RevenueBase identified 552 mining geology consultants headquartered in the United States 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?

Boart Longyear, headquartered in West Valley City, tops this list with the largest team on record.

Which city has the most mining geology consultants?

Houston leads with 29 headquartered companies, followed by Denver (19) and Reno (18).

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 4,264 verified decision-maker contacts tracked across these 552 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.