Company lists · Data refreshed September 2026

Top 25 Mining environmental consulting firms based in the United States

Name: Mining environmental consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 3,037 companies tracked

RevenueBase identified 3,037 company matches for mining environmental consulting firms associated with the United States as of September 2026 and tracks 83,438 professional contacts across them, including 41,884 with verified work emails and 36,915 with mobile numbers. Houston is the largest hub.

This list covers company matches for mining environmental consulting firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 5, 2026 How this list was built

3,037Companies

83,438Contacts tracked

41,884Verified emails

36,915Mobile numbers

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

The 25 largest mining environmental consulting firms based in the United States

Ranked by team size

Top 25 of 3,037 company matches for mining environmental consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Sep 5, 2026	5,001-10,000	6,113 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
2	Geosyntec Consultants	Exact match	Boca Raton, FL, United StatesHQ recorded Sep 5, 2026	1,001-5,000	2,393 contacts →
	Exact match “Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
3	ECS Group Of Companies	Exact match	Chantilly, VA, United StatesHQ recorded Sep 5, 2026	1,001-5,000	2,210 contacts →
	Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
4	Langan Engineering & Environmental Services	Exact match	Parsippany, NJ, United StatesHQ recorded Sep 5, 2026	1,001-5,000	2,177 contacts →
	Exact match “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
5	Civil & Environmental Consultants, INC	Exact match	Moon Township, PA, United StatesHQ recorded Sep 5, 2026	1,001-5,000	2,145 contacts →
	Exact match “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
6	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 5, 2026	1,001-5,000	1,629 contacts →
	Exact match “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
7	Montrose Environmental Group	Exact match	Little Rock, AR, United StatesHQ recorded Sep 5, 2026	1,001-5,000	1,529 contacts →
	Exact match “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
8	Knight Piesold	Exact match	Denver, CO, United StatesHQ recorded Sep 5, 2026	1,001-5,000	1,231 contacts →
	Exact match “Knight Piésold is an employee-owned, global consulting firm providing specialist services to the mining, power, water resources, and infrastructure industries.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
9	Verdantas	Exact match	Tampa, FL, United StatesHQ recorded Sep 5, 2026	1,001-5,000	1,139 contacts →
	Exact match “At Verdantas, we blend engineering and environmental science together with advanced technology and world-renowned labs to create solutions with the big picture in mind.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
10	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Sep 5, 2026	1,001-5,000	1,137 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
11	Barr Engineering CO	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 5, 2026	1,001-5,000	1,088 contacts →
	Exact match “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
12	Braun Intertec Corporation	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 5, 2026	1,001-5,000	1,065 contacts →
	Exact match “At Braun Intertec, we work at the intersection of the natural and built environments, combining science, technology, and engineering.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
13	Trinity Consultants	Exact match	Dallas, TX, United StatesHQ recorded Sep 5, 2026	1,001-5,000	961 contacts →
	Exact match “Trinity Consultants is a global team of experts helping organizations solve complex challenges in environmental compliance, ecological protection, infrastructure performance, and…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
14	Alliance Technical Group	Exact match	Decatur, AL, United StatesHQ recorded Sep 5, 2026	1,001-5,000	956 contacts →
	Exact match “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
15	ATC Group Services LLC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 5, 2026	1,001-5,000	865 contacts →
	Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
16	DUDEK	Exact match	Encinitas, CA, United StatesHQ recorded Sep 5, 2026	501-1,000	795 contacts →
	Exact match “Dudek is an environmental, planning, and engineering consulting firm.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
17	The Foth Companies	Exact match	De Pere, WI, United StatesHQ recorded Sep 5, 2026	501-1,000	781 contacts →
	Exact match “By combining science, engineering, and technology with a true collaborative spirit, Foth has delivered innovative solutions to our clients since 1938.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
18	Environmental Science Associates	Exact match	San Francisco, CA, United StatesHQ recorded Sep 5, 2026	501-1,000	732 contacts →
	Exact match “ESA is a 100% employee-owned environmental consulting firm.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
19	Antea Group USA	Exact match	St. Paul, MN, United StatesHQ recorded Sep 5, 2026	1,001-5,000	658 contacts →
	Exact match “Antea Group is an international engineering and environmental consulting firm specializing in full-service solutions in the fields of environment, health and safety, and…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
20	Raba Kistner, INC	Exact match	San Antonio, TX, United StatesHQ recorded Sep 5, 2026	501-1,000	582 contacts →
	Exact match “Founded in 1968, Raba Kistner Inc.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
21	Trihydro Corporation	Exact match	Laramie, WY, United StatesHQ recorded Sep 5, 2026	501-1,000	577 contacts →
	Exact match “Headquartered in Laramie, Wyoming, Trihydro provides environmental consulting, engineering and surveying, air quality and process management, information technology, and water and…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
22	EBI Consulting	Exact match	Burlington, MA, United StatesHQ recorded Sep 5, 2026	501-1,000	535 contacts →
	Exact match “For 35 years we have been helping investors, lenders, owners, developers, contractors, and property managers reduce risk and optimize their built facilities, infrastructure and…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
23	Mining And Minerals Processing Jobs	Exact match	Clayton, NC, United StatesHQ recorded Sep 5, 2026	n/a	529 contacts →
	Exact match “Connecting industry professionals with the most successful companies in the North American mining industry is what we do best at Resource Erectors.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
24	Nova Engineering And Environmental, LLC	Exact match	Kennesaw, GA, United StatesHQ recorded Sep 5, 2026	501-1,000	518 contacts →
	Exact match “Established in 1996, NOVA was originally founded to provide Environmental Consulting, Geotechnical Engineering, and Construction Materials Testing and Inspection services to the…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
25	BSC Group	Exact match	Boston, MA, United StatesHQ recorded Sep 5, 2026	51-200	504 contacts →
	Exact match “BSC Group, Inc.(BSC) is a multidisciplinary consulting firm with a staff of more than 200 professionals and offices in Boston, Worcester, Andover, and West Yarmouth, MA, as well…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “mining environmental consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 3,037 mining environmental consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 41,884 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Mining environmental consulting firms based in the United States at a glance

As of Sep 5, 2026

50.2%Verified-email coverage

44.2%Mobile-number coverage

27.5Average contacts per company

1-10Median size (employees)

2.2%Largest-city concentration · Houston

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

1,594

11-50

1,038

51-200

297

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

39,0640–30

2,62631–60

2161–90

1590–180

158180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “mining environmental consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 41,884 professional contacts with verified work emails across the full matched dataset. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Mining environmental consulting firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “mining environmental consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many mining environmental consulting firms are there based in the United States?

RevenueBase identified 3,037 company matches for mining environmental consulting firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Terracon tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most mining environmental consulting firms?

Houston leads with 66 company records, followed by Denver (37) and Austin (32).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 41,884 professional contacts with verified work emails tracked across these 3,037 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,037 mining environmental consulting firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Mining environmental consulting firms 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 SmartSearch, 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.