Company lists · Data refreshed November 2026

Top 25 Mine drainage engineering consultants based in the United States

RevenueBase identified 533 company matches for mine drainage engineering consultants associated with the United States as of November 2026 and tracks 31,102 professional contacts across them, including 14,866 with verified work emails. Houston is the largest hub.

This list covers company matches for mine drainage engineering consultants 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 November 6, 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 Nov 6, 2026 How this list was built
533Companies
31,102Contacts tracked
14,866Verified emails
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The 25 largest mine drainage engineering consultants based in the United States

Ranked by team size
Top 25 of 533 company matches for mine drainage engineering consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPasadena, CA, United StatesHQ recorded Nov 6, 202610001+14,232 contacts →

Exact match

“Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchOlathe, NE, United StatesHQ recorded Nov 6, 20265,001-10,0006,576 contacts →

Exact match

“Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMinneapolis, NV, United StatesHQ recorded Nov 6, 20261,001-5,0001,146 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchTuscaloosa, AL, United StatesHQ recorded Nov 6, 2026201-500464 contacts →

Exact match

“Founded in 1964, TTL is an engineering design firm focused on delivering integrated infrastructure solutions for public and private clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAustin, FL, United StatesHQ recorded Nov 6, 2026201-500286 contacts →

Exact match

“Established in 1974, INTERA is a geosciences and engineering consulting firm focused on providing water resources and supply, environmental, mining, radioactive waste isolation…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWest Fargo, MN, United StatesHQ recorded Nov 6, 2026201-500202 contacts →

Exact match

“Moore's consulting engineers work side by side with you to understand your needs, explore all the options, and find innovative and economical solutions for your civil, surveying…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMetairie, TX, United StatesHQ recorded Nov 6, 2026201-500197 contacts →

Exact match

“Project Consulting Services®, Inc.(PCS) provides consulting and engineering expertise to the energy infrastructure industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchTucson, AZ, United StatesHQ recorded Nov 6, 2026201-500173 contacts →

Exact match

“WestLand Engineering & Environmental Services, has been a leading engineering and environmental services firm since 1997.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSeattle, OR, United StatesHQ recorded Nov 6, 202651-200170 contacts →

Exact match

“Herrera Environmental Consultants is a leading engineering and scientific consulting firm focused on restoration, water, and sustainable development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchFarmington, SC, United StatesHQ recorded Nov 6, 202651-200164 contacts →

Exact match

“For 40 years, the consulting engineers at HRP have worked together with our clients to assure that they reach their intended business goals and achieve the right solutions to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMorrisville, CO, United StatesHQ recorded Nov 6, 2026501-1,000151 contacts →

Exact match

“AQUALIS is the national leader in water management, compliance and engineering, helping businesses meet complex water regulations while protecting long-term infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchOntario, CA, United StatesHQ recorded Nov 6, 2026201-500148 contacts →

Exact match

“Geo-Logic Associates, Inc.(GLA) is an employee-owned, multidisciplinary consulting firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDenver, WA, United StatesHQ recorded Nov 6, 2026201-500142 contacts →

Exact match

“Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchGreenwood Village, CO, United StatesHQ recorded Nov 6, 202651-200134 contacts →

Exact match

“CMS Environmental Solutions is a stormwater compliance consultant providing NOI permitting, development, dewatering planning, site inspections, and custom stormwater management…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchReno, CA, United StatesHQ recorded Nov 6, 202651-200129 contacts →

Exact match

“NCE's experience is as extensive as the need for answers to the complex issues challenging designers and policy makers of the future.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWest Union, WV, United StatesHQ recorded Nov 6, 2026201-50099 contacts →

Exact match

“Triple H Enterprises is a multi-disciplinary engineering & consulting company located in the heart of the Marcellus Shale.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHarrisburg, MD, United StatesHQ recorded Nov 6, 202651-20095 contacts →

Exact match

“Established in 1969, Skelly and Loy is a privately owned, mid-sized corporation with 6 Mid-Atlantic offices.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLatrobe, PA, United StatesHQ recorded Nov 6, 202651-20095 contacts →

Exact match

“Gibson-Thomas is a multi-discipline consulting engineering firm established in 1916.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchCumberland, AZ, United StatesHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“Founded in 1985, Sevee & Maher Engineers (SME) is an accomplished team of 130+ experienced and talented professionals providing environmental and civil engineering consulting…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMilwaukee, WI, United StatesHQ recorded Nov 6, 202651-20083 contacts →

Exact match

“The Sigma Group (Sigma) is a 100% employee owned, award-winning consulting engineering firm headquartered in Southeastern Wisconsin.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSandy, CO, United StatesHQ recorded Nov 6, 202611-5083 contacts →

Exact match

“Mining & Environmental Services LLC provides specialized technical expertise, at a high level of excellence, to support our Clients throughout the full process cycle of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchDavis, CA, United StatesHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“Larry Walker Associates (LWA) is a privately owned firm headquartered in Davis, California, with offices in Berkeley, Yreka, Santa Monica, Ventura, San Diego, and Seattle, WA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchButte, MT, United StatesHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“Water & Environmental Technologies (WET) is a full-service environmental and civil consulting and engineering firm located in Butte, Montana, with branch offices in Anaconda…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchFort Collins, WA, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“We deliver quality solutions with integrity and expertise, every time.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchOakland, TX, United StatesHQ recorded Nov 6, 202651-20070 contacts →

Exact match

“We may not be superheroes, but we are saving the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 533 mine drainage engineering consultants based in the United States

See the full list, filter by size, metro and specialty, and access 14,866 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Mine drainage engineering consultants based in the United States at a glance

As of Nov 6, 2026
47.8%Verified-email coverage
58.4Average contacts per company
1-10Median size (employees)
2.6%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
284
11-50
185
51-200
48
201-500
10
501-1,000
1
1,001-5,000
1
5,001-10,000
2
10001+
1

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 533 companies.

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 “mine drainage engineering consultants” 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 14,866 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 November 6, 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.

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 “mine drainage engineering consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many mine drainage engineering consultants are there based in the United States?

RevenueBase identified 533 company matches for mine drainage engineering consultants associated with the United States as of November 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?

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

Which city has the most mine drainage engineering consultants?

Houston leads with 14 company records, followed by Austin (12) and Denver (11).

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 14,866 professional contacts with verified work emails tracked across these 533 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 November 6, 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 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.