Company lists · Data refreshed October 2026

Top 25 Mining resource estimation firms based in the United States

RevenueBase identified 263 company matches for mining resource estimation firms associated with the United States as of October 2026 and tracks 2,041 professional contacts across them, including 620 with verified work emails. Houston is the largest hub.

This list covers company matches for mining resource estimation 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 October 18, 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 Oct 18, 2026 How this list was built
263Companies
2,041Contacts tracked
620Verified emails
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The 25 largest mining resource estimation firms based in the United States

Ranked by team size
Top 25 of 263 company matches for mining resource estimation firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 18, 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 matchDallas, TX, United StatesHQ recorded Oct 18, 2026201-500273 contacts →

Exact match

“Reserves assessments and appraisals • Prospective resources assessments • Unconventional resources assessments • Contingent resources assessments • Reservoir simulation •…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
2Exact matchSandy, UT, United StatesHQ recorded Oct 18, 202611-5078 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 · Oct 18, 2026 · View company records in RevenueBase
3Exact matchElko, NV, United StatesHQ recorded Oct 18, 202651-20068 contacts →

Exact match

“Rangefront exists to serve your mining or exploration project in the most efficient, advanced, and forward-thinking way.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
4Exact matchCanonsburg, PA, United StatesHQ recorded Oct 18, 202651-20065 contacts →

Exact match

“Since 1943, BOYD mining consultants have provided advisory services to a diverse mix of domestic and international clientele: mining companies, investors, financial institutions…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
5Exact matchTucson, AZ, United StatesHQ recorded Oct 18, 202651-20056 contacts →

Exact match

“CALL & NICHOLAS (CNI) is an international mining consulting firm that specializes in geological engineering, geotechnical engineering, and hydrogeology.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
6Exact matchEnglewood, CO, United StatesHQ recorded Oct 18, 202651-20056 contacts →

Exact match

“Terra Guidance provides geological analysis remotely, onsite, and in-house.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
7Exact matchGrand Junction, CO, United StatesHQ recorded Oct 18, 202651-20046 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
8Exact matchSpokane Valley, WA, United StatesHQ recorded Oct 18, 202651-20046 contacts →

Exact match

“At Costmine Intelligence, we deliver accurate, engineering-based mining data that supports confident and informed decisions.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
9Exact matchStillwater, MN, United StatesHQ recorded Oct 18, 202611-5041 contacts →

Exact match

“Big Rock Exploration, LLC (BRE) specializes in mineral and mining exploration offering clients experience in project management, resource targeting, asset development and geologic…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
10Exact matchMidvale, UT, United StatesHQ recorded Oct 18, 202611-5031 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
11Exact matchCo. 80155, CO, United StatesHQ recorded Oct 18, 202651-20031 contacts →

Exact match

“Behre Dolbear is one of the oldest mineral industry advisory firms in the world continuously operating since 1911.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
12Exact matchBluefield, VA, United StatesHQ recorded Oct 18, 202611-5030 contacts →

Exact match

“Headquartered in Bluefield, Virginia, Marshall Miller & Associates (MM & A) represents a unique assembly of engineering and science-related professionals, whose goals are to…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
13Exact matchAnchorage, AK, United StatesHQ recorded Oct 18, 202611-5030 contacts →

Exact match

“Alaska Earth Sciences (AES) is an Anchorage-based geologic consulting expertise to promote, manage, and support mineral exploration and development.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
14Exact matchTucson, AZ, United StatesHQ recorded Oct 18, 20261-1028 contacts →

Exact match

“MINSYS is a competitive consulting group with extensive expertise in optimizing processes related to mine planning based on historical data towards increasing business value.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Oct 18, 202611-5026 contacts →

Exact match

“When a well kicks off horizontally, our expertise runs deep.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
16Exact matchSparks, NV, United StatesHQ recorded Oct 18, 202611-5026 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
17Exact matchFort Collins, CO, United StatesHQ recorded Oct 18, 202611-5025 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
18Exact matchMarietta, GA, United StatesHQ recorded Oct 18, 202611-5020 contacts →

Exact match

“GeoLogic, LLC, is a full-service geological engineering firm that uses scientific investigation and engineering design to provide innovative solutions to our clients’ most…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
19Exact matchDallas, TX, United StatesHQ recorded Oct 18, 202611-5020 contacts →

Exact match

“Born from the merger of two renowned firms: Haas Engineering and Cobb & Associates, HAAS & COBB's team of professional engineers and geologists bring a wealth of knowledge and a…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
20Exact matchOsburn, WA, United StatesHQ recorded Oct 18, 202611-5018 contacts →

Exact match

“Tamarack Geological Services provides geologists and technicians to projects large and small to the mineral exploration, mining, and geotechnical engineering industries.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
21Exact matchAlbany, NY, United StatesHQ recorded Oct 18, 202611-5017 contacts →

Exact match

“With offices in New York, Pennsylvania and New Hampshire, Continental Placer Inc.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
22Exact matchGolden, CO, United StatesHQ recorded Oct 18, 202611-5017 contacts →

Exact match

“Global Resource Engineering (GRE) is a mining engineering firm specializing in providing geology and engineering services to developing projects and existing operations.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Oct 18, 202611-5017 contacts →

Exact match

“TASK FRONTERRA is a leading international and independent provider of high-end GEOSCIENCE and ENGINEERING SERVICES, offering exploration, appraisal and developmental services for…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
24Exact matchReno, NV, United StatesHQ recorded Oct 18, 202611-5016 contacts →

Exact match

“Geologica excels in Geothermal Resource Consulting by providing high quality global geothermal resource exploration, development and assessment services for private and public…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
25Exact matchPleasanton, CA, United StatesHQ recorded Oct 18, 202651-20016 contacts →

Exact match

“NEOS helps governments, energy ministries and exploration teams in the natural resources industries make faster, more informed decisions about where to explore, lease and drill.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase

Showing 25 of 263 mining resource estimation firms based in the United States

See the full list, filter by size, metro and specialty, and access 620 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Mining resource estimation firms based in the United States at a glance

As of Oct 18, 2026
30.4%Verified-email coverage
7.8Average contacts per company
1-10Median size (employees)
9.1%Largest-city concentration · Houston
Oct 18, 2026Page data refreshed

Companies by employee count

1-10
177
11-50
67
51-200
15
201-500
3
1,001-5,000
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 263 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 “mining resource estimation 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 620 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 October 18, 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 “mining resource estimation firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 263 company matches for mining resource estimation firms associated with the United States as of October 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?

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

Which city has the most mining resource estimation firms?

Houston leads with 24 company records, followed by Denver (12) and Reno (8).

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 620 professional contacts with verified work emails tracked across these 263 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 October 18, 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.