Company lists · Data refreshed September 2026

Top 25 Mining investment firms based in the United States

Name: Mining investment 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 28, 2026 139 companies tracked

RevenueBase identified 139 mining investment firms headquartered in the United States as of September 2026 and tracks 14,044 professional contacts across them, including 696 with verified work emails. New York is the largest hub.

This list covers mining investment 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 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 28, 2026 86% judged on-target in blind review

139Companies

14,044Contacts tracked

696Verified emails

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The 25 largest mining investment firms based in the United States

Ranked by team size

Top 25 of 139 mining investment firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to mining investment firms: 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	Aura Minerals INC	Partial evidence	Miami, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,175 contacts →
	Partial evidence “We are Aura Minerals and we think differently about mining.” Source: RevenueBase Database · checked Sep 28, 2026
2	Stronghold Investment Management	Partial evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	51-200	180 contacts →
	Partial evidence “Stronghold Investment Management is an investment manager, focused on energy and natural resources, fortified by an experienced operating and technical team.” Source: RevenueBase Database · checked Sep 28, 2026
3	John T. Boyd Company	Partial evidence	Canonsburg, PA, United StatesHQ checked Sep 28, 2026	51-200	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 28, 2026
4	Duff & Phelps Investment Management CO	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	51-200	63 contacts →
	Partial evidence “Duff & Phelps Investment Management pursues specialized investment strategies with exceptional depth of resources and expertise.” Source: RevenueBase Database · checked Sep 28, 2026
5	Pattison Company, LLC	Partial evidence	Garnavillo, IA, United StatesHQ checked Sep 28, 2026	51-200	58 contacts →
	Partial evidence “Pattison Company, LLC is a Mining company located at 23656 Great River Rd, Garnavillo, IA, 52049, United States.” Source: RevenueBase Database · checked Sep 28, 2026
6	Buffalo Bayou Holdings	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	51-200	44 contacts →
	Indirect evidence “Buffalo Bayou Holdings was started in 2017 by a small team of skilled investors focusing primarily on mineral rights.” Source: RevenueBase Database · checked Sep 28, 2026
7	U.S. Global Investors	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 28, 2026	11-50	41 contacts →
	Indirect evidence “U.S.” Source: RevenueBase Database · checked Sep 28, 2026
8	BIG Rock Exploration	Partial evidence	Stillwater, MN, United StatesHQ checked Sep 28, 2026	11-50	36 contacts →
	Partial evidence “Big Rock Exploration, LLC (BRE) specializes in mineral and mining exploration offering clients experience in project management, resource targeting, asset development and geologic…” Source: RevenueBase Database · checked Sep 28, 2026
9	Burgex Mining Consultants	Partial evidence	Midvale, UT, United StatesHQ checked Sep 28, 2026	11-50	33 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
10	NISS	Partial evidence	Kellogg, ID, United StatesHQ checked Sep 28, 2026	51-200	30 contacts →
	Partial evidence “Nasco Industrial Services & Supply (NISS) is a full-service mining supply and contract drilling and General Contracting Mining agency, built to serve the industries that make…” Source: RevenueBase Database · checked Sep 28, 2026
11	American Mining And Tunneling	Partial evidence	Spokane, WA, United StatesHQ checked Sep 28, 2026	51-200	21 contacts →
	Partial evidence “American Mining and Tunneling LLC provides superior expertise and experienced services to the mining industry from beginning stage exploration to the end of mine life reclamation.” Source: RevenueBase Database · checked Sep 28, 2026
12	Global Resource Engineering	Partial evidence	Golden, CO, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “Global Resource Engineering (GRE) is a mining engineering firm specializing in providing geology and engineering services to developing projects and existing operations.” Source: RevenueBase Database · checked Sep 28, 2026
13	Bidra Innovation Ventures	Partial evidence	San Francisco, United StatesHQ checked Sep 28, 2026	1-10	13 contacts →
	Partial evidence “Bidra invests in founders that reinvent agriculture, industrials, and mining.” Source: RevenueBase Database · checked Sep 28, 2026
14	Extract Capital	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	10 contacts →
	Indirect evidence “Extract Capital is a natural resource-focused hedge fund based in New York City and Toronto.” Source: RevenueBase Database · checked Sep 28, 2026
15	Allegiance OIL & GAS	Partial evidence	Cypress, TX, United StatesHQ checked Sep 28, 2026	1-10	10 contacts →
	Partial evidence “Allegiance Oil & Gas is a privately-funded oil & gas investment firm based in Cypress, Texas.” Source: RevenueBase Database · checked Sep 28, 2026
16	Amvest Capital	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	9 contacts →
	Partial evidence “Amvest Capital is a specialist investment management and corporate finance firm focused solely on the natural resource sector.” Source: RevenueBase Database · checked Sep 28, 2026
17	Ouray Silver Mines	Indirect evidence	Ouray, CO, United StatesHQ checked Sep 28, 2026	51-200	9 contacts →
	Indirect evidence “Ouray Silver Mines is a company focused on the development and expansion of the historic Revenue-Virginius Mine in Ouray Colorado.” Source: RevenueBase Database · checked Sep 28, 2026
18	Bronco Creek Exploration, INC	Indirect evidence	Littleton, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “I co-founded Bronco Creek Exploration with my partner Eric Jensen in 2002.” Source: RevenueBase Database · checked Sep 28, 2026
19	Piton Exploration, LLC	Indirect evidence	Palmer, AK, United StatesHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “Piton Exploration specializes in remote mineral exploration throughout North America.” Source: RevenueBase Database · checked Sep 28, 2026
20	NV Resources	Indirect evidence	Incline Village, NV, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “Project Generation Specialists We specialise in creating new mineral exploration companies focused on early stage mineral assets that have a good chance at becoming a mine.” Source: RevenueBase Database · checked Sep 28, 2026
21	CC Explorations	Partial evidence	St Mesa, AZ, United StatesHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “CC Explorations helps mining companies reduce unnecessary drilling, shorten exploration timelines, and allocate capital more effectively, by improving how decisions are made…” Source: RevenueBase Database · checked Sep 28, 2026
22	SMG Group	Partial evidence	Schaumburg, IL, United StatesHQ checked Sep 28, 2026	51-200	5 contacts →
	Partial evidence “Investment Management Services” Source: RevenueBase Database · checked Sep 28, 2026
23	Mini Mines	Indirect evidence	Maitland, FL, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Small Coins.” Source: RevenueBase Database · checked Sep 28, 2026
24	Kalo Capital Management	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “Kalo Capital Management specializes in providing investment management services to clients, focused on stock investment management.” Source: RevenueBase Database · checked Sep 28, 2026
25	Atacama Resources International	Partial evidence	Orlando, FL, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “Harnessing the legacy of Ontario’s famed Kirkland Lake region, ACRL's mining operations are grounded in the vibrant heart of Canada’s renowned “Golden Mile,” the high producing…” Source: RevenueBase Database · checked Sep 28, 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: mining investment firms. 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 mining investment firms.
Partial evidence: Its own public description names part of mining investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name mining investment firms. 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 139 mining investment firms based in the United States

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Mining investment firms based in the United States at a glance

As of Sep 28, 2026

5.0%Verified-email coverage

101.0Average contacts per company

1-10Median size (employees)

6.5%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

10001+

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 139 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 mining investment firms, 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 “mining investment firms”. 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 mining investment firms), 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 mining investment 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 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, 696 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 28, 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 mining investment firms, 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 mining investment firms are there based in the United States?

RevenueBase identified 139 mining investment 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?

Aura Minerals INC, headquartered in Miami, tops this list with the largest team on record.

Which city has the most mining investment firms?

New York leads with 9 headquartered companies, followed by Austin (5) and Boston (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 696 verified decision-maker contacts tracked across these 139 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 28, 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.