Company lists · Data refreshed November 2026

Top 25 Diamond drilling contractors based in the United States

RevenueBase identified 545 company matches for diamond drilling contractors associated with the United States as of November 2026 and tracks 9,621 professional contacts across them, including 2,766 with verified work emails. Houston is the largest hub.

This list covers company matches for diamond drilling contractors 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
545Companies
9,621Contacts tracked
2,766Verified emails
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The 25 largest diamond drilling contractors based in the United States

Ranked by team size
Top 25 of 545 company matches for diamond drilling contractors 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 matchFort Worth, PA, United StatesHQ recorded Nov 6, 2026501-1,000564 contacts →

Exact match

“Ulterra is a forward-thinking drilling partner whose purpose is to empower people to advance the oil field.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchOklahoma City, OK, United StatesHQ recorded Nov 6, 20261,001-5,000498 contacts →

Exact match

“As the largest privately-held domestic land drilling contractor in the United States, Cactus provides competent, motivated personnel utilizing premium equipment to meet and exceed…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNew Iberia, LA, United StatesHQ recorded Nov 6, 2026501-1,000304 contacts →

Exact match

“LEAM Drilling Systems, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchEl Reno, OK, United StatesHQ recorded Nov 6, 20261,001-5,000205 contacts →

Exact match

“Nomac Drilling is now Patterson-UTI.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAuburn, NH, United StatesHQ recorded Nov 6, 2026201-500195 contacts →

Exact match

“Maine Drilling & Blasting is all about making it happen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchElko, NV, United StatesHQ recorded Nov 6, 2026201-500179 contacts →

Exact match

“National provides mining companies primarily working in the Western United States with the safest, most competitive drilling services in the industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSalina, KS, United StatesHQ recorded Nov 6, 202651-200115 contacts →

Exact match

“Geoprobe® Manufactures Powerful, Compact Machines & Tooling that Provide Direct Push, Rotary, & Sonic Drilling Capabilities to the Environmental, Geotechnical, Geothermal, &…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSparks, NV, United StatesHQ recorded Nov 6, 2026201-500107 contacts →

Exact match

“Redpath USA Corporation is a full-service underground mining contractor.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLittle Falls, CA, United StatesHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“Hole Products is a leading manufacturer and supplier of high performance drilling supplies, tools and equipment to the construction, direct push, environmental, geotechnical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchElko, MN, United StatesHQ recorded Nov 6, 2026201-50079 contacts →

Exact match

“With more than 7.4 million feet drilled in the past seven years, Timberline Drilling has a proven track records in safety and production.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMt Morris, PA, United StatesHQ recorded Nov 6, 20261,001-5,00078 contacts →

Exact match

“Shaft Drillers International LLC Headquartered in Mt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“We deliver our customers consistent high performance through optimal manufacturing processes and outstanding customer service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchFort Worth, TX, United StatesHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“As a long recognized leader and innovator in the Drilled Shaft Industry, Watson is uniquely qualified to design and manufacture drill rigs for drilled shaft (bored pile)…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRockwall, TX, United StatesHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Big Dog Drilling is commercial pier drilling and concrete contractor located in Rockwall, TX”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSalt Lake City, United StatesHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“WESCO provides rock drilling and blasting solutions to businesses in the construction and mining industries throughout the western United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWaller, TX, United StatesHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“Laney Directional Drilling Co.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchRathdrum, ID, United StatesHQ recorded Nov 6, 202651-20058 contacts →

Exact match

“Since 1978 Bay Shore Systems has been a leading innovator in foundation drilling equipment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBellaire, TX, United StatesHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“Big E Drilling Company is a family-owned, and operated, land-based drilling contractor; that has served the Texas and Louisiana markets since 1981.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202611-5052 contacts →

Exact match

“HDD Industry Sharewell is the leading supplier of downhole drilling tools, guidance systems and services for the Horizontal Directional Drilling industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchEdgewood, WA, United StatesHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“Continuing to Provide Knowledgable and Reliable Drilling Services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchIndianapolis, IN, United StatesHQ recorded Nov 6, 202611-5045 contacts →

Exact match

“Mobile Drill Intl manufactures a full line of drill rigs and tooling servicing the Geotechnical, Environmental, Mineral Exploration, Water Well and Seismic industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchGrand Rapids, MI, United StatesHQ recorded Nov 6, 202651-20041 contacts →

Exact match

“Since 1974, Concrete Cutting & Breaking Co has been the industry leaders in concrete sawing and drilling.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchButte, MT, United StatesHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“Company Profile AK Drilling is a global leader in exploration and drilling services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSpringfield, OR, United StatesHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“Drilling, Blasting, Crushing, Quarries Aggregate Resource Industries, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchElburn, IL, United StatesHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“Rig Source is a full-service drilling equipment provider specializing in drill rigs and support equipment for geotechnical, environmental, and exploration core drilling…”

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

Showing 25 of 545 diamond drilling contractors based in the United States

See the full list, filter by size, metro and specialty, and access 2,766 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Diamond drilling contractors based in the United States at a glance

As of Nov 6, 2026
28.7%Verified-email coverage
17.7Average contacts per company
11-50Median size (employees)
4.2%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
194
11-50
245
51-200
78
201-500
18
501-1,000
5
1,001-5,000
4
5,001-10,000
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 545 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 “diamond drilling contractors” 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 2,766 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 “diamond drilling contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many diamond drilling contractors are there based in the United States?

RevenueBase identified 545 company matches for diamond drilling contractors 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?

Ulterra Drilling Technologies L.P tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most diamond drilling contractors?

Houston leads with 23 company records, followed by Elko (7) and Midland (7).

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 2,766 professional contacts with verified work emails tracked across these 545 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.