Company lists · Data refreshed September 2026

Top 25 Mining permitting consultants based in the United States

Name: Mining permitting 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 189 companies tracked

RevenueBase identified 189 mining permitting consultants headquartered in the United States as of September 2026 and tracks 1,685 professional contacts across them, including 695 with verified work emails. Reno is the largest hub.

This list covers mining permitting 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

189Companies

1,685Contacts tracked

695Verified emails

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The 25 largest mining permitting consultants based in the United States

Ranked by team size

Top 25 of 189 mining permitting 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 permitting 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	Ecorp Consulting, INC	Indirect evidence	Rocklin, CA, United StatesHQ checked Sep 17, 2026	51-200	166 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
2	Ensero Solutions	Partial evidence	Fort Collins, CO, United StatesHQ checked Sep 17, 2026	51-200	129 contacts →
	Partial 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
3	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
4	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
5	Westward	Partial evidence	Boerne, TX, United StatesHQ checked Sep 17, 2026	11-50	55 contacts →
	Partial 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
6	Call & Nicholas	Partial evidence	Tucson, AZ, United StatesHQ checked Sep 17, 2026	51-200	52 contacts →
	Partial 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
7	Panorama Environmental, INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	40 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
8	The WCM Group, INC	Partial evidence	Humble, TX, United StatesHQ checked Sep 17, 2026	11-50	36 contacts →
	Partial evidence “The WCM Group is a team of environmental consultants, engineers and experienced professionals dedicated to helping businesses navigate the environmental regulatory landscape.” Source: RevenueBase Database · checked Sep 17, 2026
9	Burgex Mining Consultants	Strong evidence	Midvale, UT, United StatesHQ checked Sep 17, 2026	11-50	33 contacts →
	Strong evidence “Burgex Mining Consultants is a full-service mineral exploration and consulting firm dedicated to solving the challenges of mining and adding value at every stage of the project…” Source: RevenueBase Database · checked Sep 17, 2026
10	GPA Consulting	Indirect evidence	El Segundo, CA, United StatesHQ checked Sep 17, 2026	11-50	31 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
11	Allstar Ecology LLC	Partial evidence	Fairmont, WV, United StatesHQ checked Sep 17, 2026	11-50	27 contacts →
	Partial evidence “AllStar Ecology provides sound environmental consulting and contracting on natural resource issues and efficient solutions to permitting constraints.” Source: RevenueBase Database · checked Sep 17, 2026
12	Forte Dynamics	Indirect evidence	Fort Collins, CO, United StatesHQ checked Sep 17, 2026	11-50	25 contacts →
	Indirect evidence “Forte Dynamics brings an extensive portfolio of completed projects with two common threads: work that touches every part of the mine life cycle, and repeat engagements with some…” Source: RevenueBase Database · checked Sep 17, 2026
13	Alaska Earth Sciences, INC	Indirect evidence	Anchorage, AK, United StatesHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “Alaska Earth Sciences (AES) is an Anchorage-based geologic consulting expertise to promote, manage, and support mineral exploration and development.” Source: RevenueBase Database · checked Sep 17, 2026
14	Absaroka Energy And Environmental Solutions, LLC	Strong evidence	Buffalo, WY, United StatesHQ checked Sep 17, 2026	11-50	22 contacts →
	Strong evidence “Absaroka Energy and Environmental Solutions, LLC is regulatory compliance and permitting consultancy operating in the Rocky Mountain region.” Source: RevenueBase Database · checked Sep 17, 2026
15	American Mining And Tunneling	Partial evidence	Spokane, WA, United StatesHQ checked Sep 17, 2026	51-200	21 contacts →
	Partial evidence “American Mining and Tunneling LLC provides superior expertise and experienced services to the mining industry from beginning stage exploration to the end of mine life reclamation.” Source: RevenueBase Database · checked Sep 17, 2026
16	Denise Duffy & Associates	Indirect evidence	Monterey, CA, United StatesHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “DD & A is an award-winning, State of California-certified Small and Woman-owned business.” Source: RevenueBase Database · checked Sep 17, 2026
17	CEHMM	Indirect evidence	Carlsbad, NM, United StatesHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “Environmental Services: Since 2013 CEHMM has provided environmental consulting services to the industry for expediting permit authorizations regarding work on state and federal…” Source: RevenueBase Database · checked Sep 17, 2026
18	Environmental Operational Solutions Eosolutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	19 contacts →
	Indirect evidence “At EOSolutions, we know you want your operations to stay in compliance.” Source: RevenueBase Database · checked Sep 17, 2026
19	Florida Engineering And Design, INC Fedinc	Indirect evidence	Bartow, FL, United StatesHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “Established in Florida in 1987, Florida Engineering and Design, Inc.(FEDINC), provides consulting and design engineering services in the following areas: Mineral Resource…” Source: RevenueBase Database · checked Sep 17, 2026
20	OWL Ridge Natural Resource Consultants, INC	Partial evidence	Anchorage, AK, United StatesHQ checked Sep 17, 2026	11-50	16 contacts →
	Partial evidence “Owl Ridge Natural Resource Consultants, Inc.(Owl Ridge) was formed in 2012 as a small business enterprise to provide a full range of environmental consulting services including…” Source: RevenueBase Database · checked Sep 17, 2026
21	Envirosystems Management, INC	Indirect evidence	Flagstaff, AZ, United StatesHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
22	Crane Environmental Services, LLC	Indirect evidence	Evansville, IN, United StatesHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “We at Crane Environmental Services, LLC believe that the environment is our greatest asset.” Source: RevenueBase Database · checked Sep 17, 2026
23	Solum Consulting Group	Partial evidence	Denver, CO, United StatesHQ checked Sep 17, 2026	1-10	15 contacts →
	Partial evidence “The environment and sustainability are key considerations across the mining, energy and resources sectors.” Source: RevenueBase Database · checked Sep 17, 2026
24	Titanium Environmental Services, LLC	Indirect evidence	Longview, TX, United StatesHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “No two environmental compliance projects are the same.” Source: RevenueBase Database · checked Sep 17, 2026
25	Global Resource Engineering	Partial evidence	Golden, CO, United StatesHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Global Resource Engineering (GRE) is a mining engineering firm specializing in providing geology and engineering services to developing projects and existing operations.” 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 permitting 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 permitting consultants.
Partial evidence: Its own public description names part of mining permitting consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name mining permitting 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 189 mining permitting consultants based in the United States

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Mining permitting consultants based in the United States at a glance

As of Sep 17, 2026

41.2%Verified-email coverage

8.9Average contacts per company

1-10Median size (employees)

4.2%Largest-city concentration · Reno

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

118

11-50

51-200

201-500

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 189 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 permitting 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 permitting 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 permitting 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 permitting 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, 695 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.

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 permitting 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 permitting consultants are there based in the United States?

RevenueBase identified 189 mining permitting 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?

Ecorp Consulting, INC, headquartered in Rocklin, tops this list with the largest team on record.

Which city has the most mining permitting consultants?

Reno leads with 8 headquartered companies, followed by Houston (6) and Denver (5).

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 695 verified decision-maker contacts tracked across these 189 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.