Company lists · Data refreshed September 2026
Top 25 Coal industry advisors based in the United States
RevenueBase identified 316 coal industry advisors headquartered in the United States as of September 2026 and tracks 5,615 professional contacts across them, including 2,575 with verified work emails. Houston is the largest hub.
This list covers coal industry advisors 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 19, 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.
The 25 largest coal industry advisors based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 219 contacts → | ||||
Indirect evidence “On October 30, 2020, LTK Engineering Services (LTK) merged with Hatch to become Hatch LTK.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 196 contacts → | ||||
Indirect evidence “Turner Mining Group is a full-service provider to the mining sector with operations throughout the United States.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 122 contacts → | ||||
Indirect evidence “Welcome to SDS Petroleum Consultants company page In Scott Stovall founded SDS Petroleum Consultants L.L.C.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 116 contacts → | ||||
Indirect evidence “Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 91 contacts → | ||||
Partial evidence “Plaster & Wald Consulting Corp has provided engineering and consulting services to the oil & gas industry since 1997.Our supervisors provide technical expertise in well planning…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 77 contacts → | ||||
Indirect 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 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 70 contacts → | ||||
Indirect evidence “We deliver quality solutions with integrity and expertise, every time.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 65 contacts → | ||||
Partial 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 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 57 contacts → | ||||
Indirect evidence “Whitman is a full-service environmental, engineering, energy, waste management and EH & S compliance consulting firm with more than 37 years of professional experience.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 56 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 55 contacts → | ||||
Indirect 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 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 52 contacts → | ||||
Partial evidence “ONE offers environmental consulting and industrial services to commercial, industrial, and government clients that are regulated by environmental state and federal regulations or…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 52 contacts → | ||||
Indirect evidence “FA Engineering provides personalized quality technical solutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 49 contacts → | ||||
Indirect evidence “CDH Consulting specializes in helping energy companies understand and manage the numerous environmental and regulatory obligations affecting their operations.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 41 contacts → | ||||
Indirect evidence “Tormod exists to help manufacturing leaders run great plants.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 40 contacts → | ||||
Partial evidence “We are a privately-owned engineering and environmental consulting firm that provide efficient engineering and environmental compliance solutions to a variety of industries and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 39 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 37 contacts → | ||||
Indirect evidence “Earthres Group, Inc.(EARTHRES) is a full-service multi-disciplinary engineering and environmental consulting firm providing high-quality services to private and public clients in…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 33 contacts → | ||||
Indirect evidence “Aquionix is an environmental and safety services company that is dedicated to assisting companies in their effort to meet the ever increasing demands of today's business and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 32 contacts → | ||||
Indirect evidence “Verdanterra is a consulting firm driven by innovative professionals in the environmental, regulatory, land survey, and engineering disciplines who are committed to providing…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 30 contacts → | ||||
Indirect evidence “H2E seeks to provide high quality environmental engineering and consulting services in the most efficient manner possible.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 29 contacts → | ||||
Indirect evidence “Headquartered in Bluefield, Virginia, Marshall Miller & Associates (MM & A) represents a unique assembly of engineering and science-related professionals, whose goals are to…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: coal industry advisors. 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 coal industry advisors.
- Partial evidence
- Its own public description names part of coal industry advisors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name coal industry advisors. 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 316 coal industry advisors based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,575 reachable decision-makers.
Free signup · no credit card
Coal industry advisors based in the United States at a glance
As of Sep 19, 2026Companies by employee count
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 316 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 coal industry advisors, 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 “coal industry advisors”. 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 coal industry advisors), 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 coal industry advisors, 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, 2,575 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 19, 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 coal industry advisors, 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 coal industry advisors are there based in the United States?
RevenueBase identified 316 coal industry advisors 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?
Knight Piesold, headquartered in Denver, tops this list with the largest team on record.
Which city has the most coal industry advisors?
Houston leads with 15 headquartered companies, followed by Denver (7) and Reno (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 2,575 verified decision-maker contacts tracked across these 316 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 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 316 coal industry advisors based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Coal industry advisors by geography
- Coal industry advisors based in Australia
- Coal industry advisors based in Brazil
- Coal industry advisors based in Canada
- Coal industry advisors based in Chile
- Coal industry advisors based in Colombia
- Coal industry advisors based in Germany
- Coal industry advisors based in India
- Coal industry advisors based in Indonesia
- Coal industry advisors based in Peru
- Coal industry advisors based in South Africa
- Coal industry advisors based in Spain
- Coal industry advisors based in Türkiye
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 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.