Company lists · Data refreshed September 2026

Top 25 Geological mapping services based in the United States

Name: Geological mapping services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 674 companies tracked

RevenueBase identified 674 geological mapping services headquartered in the United States as of September 2026 and tracks 12,538 professional contacts across them, including 3,892 with verified work emails. Houston is the largest hub.

This list covers geological mapping services 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 20, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

674Companies

12,538Contacts tracked

3,892Verified emails

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The 25 largest geological mapping services based in the United States

Ranked by team size

Top 25 of 674 geological mapping services based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to geological mapping services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Boart Longyear	Indirect evidence	West Valley City, UT, United StatesHQ checked Sep 20, 2026	5,001-10,000	3,285 contacts →
	Indirect evidence “Established in 1890, Boart Longyear is the world’s leading innovative provider of drilling services, manufacturer of productivity-driven drilling equipment and performance…” Source: RevenueBase Database · checked Sep 20, 2026
2	Knight Piesold	Indirect evidence	Denver, CO, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,231 contacts →
	Indirect 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 20, 2026
3	Saexploration	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	521 contacts →
	Indirect evidence “SAExploration offers a full range of geophysical ground acquisition services from design, prospecting, drilling, recording and analysis of field quality, as well as mobilization…” Source: RevenueBase Database · checked Sep 20, 2026
4	Global Geophysical Services	Indirect evidence	Missouri City, TX, United StatesHQ checked Sep 20, 2026	201-500	396 contacts →
	Indirect evidence “GGS provides an integrated suite of Geoscience solutions to the global oil and gas industry including high-resolution RG-3D Reservoir Grade® seismic data acquisition, Multi Client…” Source: RevenueBase Database · checked Sep 20, 2026
5	Topographic, CO	Partial evidence	Benbrook, TX, United StatesHQ checked Sep 20, 2026	201-500	335 contacts →
	Partial evidence “What began as a small company in the oilfields of Southern Oklahoma, today Topographic Land Surveyors stands as the industry leader in the fields of Surveying, Mapping…” Source: RevenueBase Database · checked Sep 20, 2026
6	Sanborn	Partial evidence	Colorado Springs, CO, United StatesHQ checked Sep 20, 2026	51-200	257 contacts →
	Partial evidence “The Sanborn Map Company Inc.(Sanborn) is an innovator in the modern geospatial industry, delivering state-of-the-art mapping, visualization and 3D solutions for customers…” Source: RevenueBase Database · checked Sep 20, 2026
7	Blew & Associates, P.A	Indirect evidence	Fayetteville, AR, United StatesHQ checked Sep 20, 2026	201-500	189 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
8	Transglobal Services LLC	Partial evidence	Fort Worth, TX, United StatesHQ checked Sep 20, 2026	201-500	166 contacts →
	Partial evidence “Transglobal Services, LLC (TGS) provides surveying, land services, GIS, mapping, and environmental services to the construction industry.” Source: RevenueBase Database · checked Sep 20, 2026
9	Kumar And Associates, INC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 20, 2026	51-200	140 contacts →
	Indirect evidence “Kumar & Associates provides geotechnical engineering, engineering geology, environmental sciences, construction observation and materials testing services for projects in the…” Source: RevenueBase Database · checked Sep 20, 2026
10	Converse Consultants	Indirect evidence	Monrovia, CA, United StatesHQ checked Sep 20, 2026	51-200	132 contacts →
	Indirect evidence “Converse was established in 1946 by Professor Frederick J.” Source: RevenueBase Database · checked Sep 20, 2026
11	Impac Exploration Services	Indirect evidence	Weatherford, OK, United StatesHQ checked Sep 20, 2026	51-200	98 contacts →
	Indirect evidence “Impac Exploration Services, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
12	Petroleum Field Services, LLC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 20, 2026	51-200	94 contacts →
	Indirect evidence “As of January 1, 2017, Petroleum Field Services is rebranded as Ascent Geomatics Solutions.” Source: RevenueBase Database · checked Sep 20, 2026
13	Towill, INC	Indirect evidence	Concord, CA, United StatesHQ checked Sep 20, 2026	51-200	91 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
14	Microseismic, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	51-200	79 contacts →
	Indirect evidence “Specialist in Real-Time Completions Intelligence for Fracture Geometry & Efficiency \| Geohazards \| Stress Field \| CCUS \| Geothermal \| FDI \| Sinkhole Detection \| Induced Seismicity…” Source: RevenueBase Database · checked Sep 20, 2026
15	Rangefront Mining Services	Indirect evidence	Elko, NV, United StatesHQ checked Sep 20, 2026	51-200	79 contacts →
	Indirect evidence “Rangefront exists to serve your mining or exploration project in the most efficient, advanced, and forward-thinking way.” Source: RevenueBase Database · checked Sep 20, 2026
16	Shaft Drillers International	Indirect evidence	Mt Morris, PA, United StatesHQ checked Sep 20, 2026	1,001-5,000	78 contacts →
	Indirect evidence “Shaft Drillers International LLC Headquartered in Mt.” Source: RevenueBase Database · checked Sep 20, 2026
17	MES Mining	Indirect evidence	Sandy, UT, United StatesHQ checked Sep 20, 2026	11-50	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 20, 2026
18	Collier Consulting & Collier Geophysics	Indirect evidence	Stephenville, TX, United StatesHQ checked Sep 20, 2026	51-200	71 contacts →
	Indirect evidence “Geoscience • Engineering • Geophysics Collier Consulting, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
19	John T. Boyd Company	Indirect evidence	Canonsburg, PA, United StatesHQ checked Sep 20, 2026	51-200	65 contacts →
	Indirect 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 20, 2026
20	Zonge International	Indirect evidence	Reno, NV, United StatesHQ checked Sep 20, 2026	51-200	64 contacts →
	Indirect evidence “Minerals / Geothermal / Groundwater / Petroleum / Environmental / Infrastructure Are you concerned about ensuring every opportunity for success for your project and stakeholders?” Source: RevenueBase Database · checked Sep 20, 2026
21	Terra Guidance, LLC	Partial evidence	Englewood, CO, United StatesHQ checked Sep 20, 2026	51-200	59 contacts →
	Partial evidence “Terra Guidance provides geological analysis remotely, onsite, and in-house.” Source: RevenueBase Database · checked Sep 20, 2026
22	Paragon Geophysical Services, INC	Indirect evidence	Wichita, KS, United StatesHQ checked Sep 20, 2026	51-200	59 contacts →
	Indirect evidence “Headquartered in Wichita, Kansas, and founded in 1993, Paragon Geophysical Services, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
23	Pattison Company, LLC	Indirect evidence	Garnavillo, IA, United StatesHQ checked Sep 20, 2026	51-200	58 contacts →
	Indirect evidence “Pattison Company, LLC is a Mining company located at 23656 Great River Rd, Garnavillo, IA, 52049, United States.” Source: RevenueBase Database · checked Sep 20, 2026
24	Engineering Analytics, INC	Indirect evidence	Fort Collins, CO, United StatesHQ checked Sep 20, 2026	201-500	56 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
25	Aero-Graphics	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 20, 2026	51-200	55 contacts →
	Indirect evidence “Since 1965, Aero-Graphics has helped clients make informed decisions through accurate, reliable geospatial data.” Source: RevenueBase Database · checked Sep 20, 2026

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: geological mapping services. 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 geological mapping services.
Partial evidence: Its own public description names part of geological mapping services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geological mapping services. 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 674 geological mapping services based in the United States

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Geological mapping services based in the United States at a glance

As of Sep 20, 2026

31.0%Verified-email coverage

18.6Average contacts per company

1-10Median size (employees)

7.9%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

395

11-50

191

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 674 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 geological mapping services, 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 “geological mapping services”. 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 geological mapping services), 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 geological mapping services, 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, 3,892 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 20, 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.

Geological mapping services by metro

Geological mapping services in Houston53

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 geological mapping services, 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 geological mapping services are there based in the United States?

RevenueBase identified 674 geological mapping services 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?

Boart Longyear, headquartered in West Valley City, tops this list with the largest team on record.

Which city has the most geological mapping services?

Houston leads with 53 headquartered companies, followed by Denver (22) and Reno (12).

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 3,892 verified decision-maker contacts tracked across these 674 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 20, 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 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.