Company lists · Data refreshed September 2026

Top 25 Mining consulting firms based in the United States

Name: Mining 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 586 companies tracked

RevenueBase identified 586 mining consulting firms headquartered in the United States as of September 2026 and tracks 12,007 professional contacts across them, including 4,071 with verified work emails and 3,721 with mobile numbers. Houston is the largest hub.

This list covers mining consulting firms 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, how directly it supports the match, and when it was last checked. 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

586Companies

12,007Contacts tracked

4,071Verified emails

3,721Mobile numbers

Unlock all 586 companies Free signup · no credit card · 500 free credits

The 25 largest mining consulting firms based in the United States

Ranked by team size

Top 25 of 586 mining consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names mining consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Knight PiesoldStrong evidence	Denver, CO, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,231
	“Knight Piésold is an employee-owned, global consulting firm providing specialist services to the mining, power, water resources, and infrastructure industries.” Source: company website · checked Sep 5, 2026
2	Barr Engineering COPartial evidence	Minneapolis, MN, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,088
	“Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Source: company website · checked Sep 5, 2026
3	MolycopIndirect evidence	Omaha, NE, United StatesHQ checked Sep 5, 2026	1,001-5,000	730
	“Molycop is a pioneer in breakthrough technologies and cutting-edge solutions that transform the way mines operate.” Source: company website · checked Sep 5, 2026
4	Mining And Minerals Processing JobsPartial evidence	Clayton, NC, United StatesHQ checked Sep 5, 2026	n/a	529
	“Connecting industry professionals with the most successful companies in the North American mining industry is what we do best at Resource Erectors.” Source: company website · checked Sep 5, 2026
5	GMS Mine Repair & MaintenanceIndirect evidence	Mountain Lake Park, MD, United StatesHQ checked Sep 5, 2026	1,001-5,000	462
	“GMS Mine Repair & Maintenance is the North American leader in underground and surface mine contracting, maintenance and services.” Source: company website · checked Sep 5, 2026
6	P&c Recruiting HRPartial evidence	North America, United StatesHQ checked Sep 5, 2026	n/a	282
	“People solutions in mining, green energy and related industrial sectors - executive and technical engineering/professional recruiting and human resources services throughout the…” Source: company website · checked Sep 5, 2026
7	Intera IncorporatedStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	201-500	259
	“Established in 1974, INTERA is a geosciences and engineering consulting firm focused on providing water resources and supply, environmental, mining, radioactive waste isolation…” Source: company website · checked Sep 5, 2026
8	Hatch LTKIndirect evidence	Ambler, PA, United StatesHQ checked Sep 5, 2026	201-500	219
	“On October 30, 2020, LTK Engineering Services (LTK) merged with Hatch to become Hatch LTK.” Source: company website · checked Sep 5, 2026
9	Turner Mining GroupPartial evidence	Bloomington, IN, United StatesHQ checked Sep 5, 2026	201-500	196
	“Turner Mining Group is a full-service provider to the mining sector with operations throughout the United States.” Source: company website · checked Sep 5, 2026
10	Small Mine Development, LLCIndirect evidence	Boise, ID, United StatesHQ checked Sep 5, 2026	201-500	179
	“Small Mine Development builds and operates America’s underground mines.” Source: company website · checked Sep 5, 2026
11	Ecorp Consulting, INCIndirect evidence	Rocklin, CA, United StatesHQ checked Sep 5, 2026	51-200	166
	Source: company website · checked Sep 5, 2026
12	National EWPPartial evidence	Elko, NV, United StatesHQ checked Sep 5, 2026	201-500	146
	“National provides mining companies primarily working in the Western United States with the safest, most competitive drilling services in the industry.” Source: company website · checked Sep 5, 2026
13	Ensero SolutionsPartial evidence	Fort Collins, CO, United StatesHQ checked Sep 5, 2026	51-200	129
	“Ensero Solutions is an environmental consulting and remediation business with specific expertise in environmental assessments and permitting solutions, mine water management…” Source: company website · checked Sep 5, 2026
14	SDS Petroleum ConsultantsIndirect evidence	Tyler, TX, United StatesHQ checked Sep 5, 2026	51-200	122
	“Welcome to SDS Petroleum Consultants company page In Scott Stovall founded SDS Petroleum Consultants L.L.C.” Source: company website · checked Sep 5, 2026
15	Penta Engineering CorporationPartial evidence	St. Louis, MO, United StatesHQ checked Sep 5, 2026	51-200	118
	“PENTA Engineering Corporation is an international, multidisciplinary firm providing comprehensive consulting and design/build solutions to the cement, lime, industrial minerals…” Source: company website · checked Sep 5, 2026
16	Edge Engineering And Science, LLCIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	116
	“Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Source: company website · checked Sep 5, 2026
17	Skelly And Loy, Inc., A Terracon CompanyIndirect evidence	Harrisburg, PA, United StatesHQ checked Sep 5, 2026	51-200	108
	“Established in 1969, Skelly and Loy is a privately owned, mid-sized corporation with 6 Mid-Atlantic offices.” Source: company website · checked Sep 5, 2026
18	Plaster & Wald Consulting CorpPartial evidence	Mustang, OK, United StatesHQ checked Sep 5, 2026	201-500	91
	“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: company website · checked Sep 5, 2026
19	Redpath USA CorporationPartial evidence	Sparks, NV, United StatesHQ checked Sep 5, 2026	201-500	87
	“Redpath USA Corporation is a full-service underground mining contractor.” Source: company website · checked Sep 5, 2026
20	Texas United Management CorporationIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	83
	“Texas United Management Corporation (TUM) is a privately owned shared services provider, founded in 1989.” Source: company website · checked Sep 5, 2026
21	Rangefront Mining ServicesPartial evidence	Elko, NV, United StatesHQ checked Sep 5, 2026	51-200	79
	“Rangefront exists to serve your mining or exploration project in the most efficient, advanced, and forward-thinking way.” Source: company website · checked Sep 5, 2026
22	MES MiningPartial evidence	Sandy, UT, United StatesHQ checked Sep 5, 2026	11-50	77
	“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: company website · checked Sep 5, 2026
23	Tierra Group International, LTDIndirect evidence	Lakewood, CO, United StatesHQ checked Sep 5, 2026	11-50	66
	“Tierra Group International, Ltd.(Tierra Group) was formed in January 2012 by Matt Fuller, CPG and Pete Kowalewski, P.E.” Source: company website · checked Sep 5, 2026
24	John T. Boyd CompanyPartial evidence	Canonsburg, PA, United StatesHQ checked Sep 5, 2026	51-200	65
	“Since 1943, BOYD mining consultants have provided advisory services to a diverse mix of domestic and international clientele: mining companies, investors, financial institutions…” Source: company website · checked Sep 5, 2026
25	Exacore, LLCPartial evidence	Plantation, FL, United StatesHQ checked Sep 5, 2026	11-50	58
	“Exacore delivers Engineering, Procurement, and Construction (EPC) services for data mining infrastructure projects.” Source: company website · checked Sep 5, 2026

Showing 25 of 586 mining consulting firms based in the United States

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Mining consulting firms based in the United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

HoustonLargest hub · 21 HQs

3,721Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

339

11-50

173

51-200

201-500

501-1,000

1,001-5,000

10001+

Verified emails by last verification

0–30

3,810

31–60

239

61–90

90–180

180+

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 consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among mining consulting firms, 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 an evidence 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, 4,071 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 5, 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

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

RevenueBase identified 586 mining consulting firms 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 mining consulting firms?

Houston leads with 21 headquartered companies, followed by Denver (18) and Reno (15).

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 4,071 verified decision-maker contacts tracked across these 586 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 5, 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.