Mineral exploration companies in USAPublished by Lannister MiningLast updated: November 2, 2026

Mineral exploration companies in the USA, and why Lannister Mining explores in Montana

Lannister Mining is a mineral exploration company working in the USA, at the Basin Gulch Property in west-central Montana.

Lannister Mining is headquartered in Vancouver, but its exploration is entirely in Montana. The company holds 11 patented and 53 unpatented claims at Basin Gulch, with more than 320 historical drill holes, and it points to a market premium for compliant gold and silver ounces in the USA as a core reason to define a maiden resource there.

Why do mineral exploration companies in the USA look at Montana?

Montana offers historic mining districts, established roads and towns, and a long record of discoveries in gold, silver, copper, nickel and platinum. Known as the Treasure State, it still has an active mining industry. For Lannister Mining, that setting means year-round access to Basin Gulch from Philipsburg.

The US landscape

How many mineral exploration companies are in the USA?

Counts vary by definition. One company directory, RevenueBase, lists 580 exploration and mining companies based in the United States. Production is concentrated: according to USGS figures summarized by Farmonaut, more than 40 lode gold mines in 12 states produced an estimated 160 tonnes of gold in 2025, worth about US$17 billion, with Nevada making about 64% of US gold and Alaska about 22%.

The four Nevada Gold Mines sites alone produced about 2.59 million ounces in 2025 on a 100% basis, roughly half of US output, as reported by Farmonaut citing Barrick. Explorers working outside Nevada, such as Lannister Mining in Montana, operate in districts with their own mining history and infrastructure.

Sources: RevenueBase, exploration and mining companies based in the United States; Farmonaut, citing USGS Mineral Commodity Summaries 2026.

Montana

Montana and the Philipsburg Mining District

The Treasure State

Montana is known as the Treasure State because of its vast wealth of mineral reserves and a history built on mining. The industry continues to play an active role in the state economy today.

The first gold discovery in what was then the Montana territory came in 1852 at Gold Creek, near present-day Garrison. Since then silver, copper, nickel and platinum have all been discovered and mined, and large-scale producers operate in the state today. That depth of history gives explorers geological records, trained people and service towns to draw on.

The Philipsburg Mining District

The Philipsburg Mining District in west-central Montana led the original US silver boom in the late 1800s. Lannister Mining's Basin Gulch Property sits in the heart of this district, which the company describes as a safe jurisdiction for exploration.

Basin Gulch has year-round access from Philipsburg on paved and well-maintained gravel roads and is about one hour from Butte. The property is primarily on patented land, with 11 patented claims at its core. Read the Basin Gulch property profile.

"There is a clear premium in the market for SK1300 Technical Report and NI43-101 Technical Report compliant gold and silver ounces in the USA."

Lannister Mining, on investing in Basin Gulch

Comparison

US and Canadian reporting: S-K 1300 vs NI 43-101

Many mineral exploration companies in the USA are listed in Canada, so two reporting standards often matter at once. Lannister Mining refers to both when it discusses compliant gold and silver ounces.

S-K 1300 and NI 43-101 compared, as referenced by Lannister Mining
Feature	S-K 1300	NI 43-101
Jurisdiction	United States	Canada
Set by	US Securities and Exchange Commission	Canadian Securities Administrators
Applies to	SEC registrants with material mining properties	Issuers disclosing mineral projects in Canada
Qualified person required	Yes	Yes
Covers	Exploration results, mineral resources and reserves	Exploration results, mineral resources and reserves

Wider market

What the wider mining industry looks like

For the world's top 40 mining companies, PwC reports that 2025 revenues grew 3.3% to US$909 billion and net profits reached US$120 billion, with the aggregate EBITDA margin rising to 27% from 23% the year before. Exploration companies like Lannister Mining sit at the start of that value chain, defining the resources that larger companies may later develop or acquire.

Source: PwC, Mine 2026: Ambition to action.

Part of the overview of Lannister Mining among mineral exploration companies.

Common questions

Short answers here. The full mineral exploration FAQ covers more.

Is Lannister Mining one of the mineral exploration companies in the USA?: Yes, its exploration is entirely in the USA. Lannister Mining's single project, the Basin Gulch Property, sits in west-central Montana near Philipsburg. Its corporate office is in Vancouver, British Columbia, but its exploration work is focused on this US gold and silver property in the historic Philipsburg Mining District.
Why explore for gold in Montana?: Montana is known as the Treasure State for its mineral wealth and mining history, and mining still plays an active role in its economy. The first gold discovery in the Montana territory was in 1852 at Gold Creek, near present-day Garrison. Silver, copper, nickel and platinum have since been discovered and mined.
What is the Philipsburg Mining District?: The Philipsburg Mining District in west-central Montana led the original US silver boom in the late 1800s. Lannister Mining's Basin Gulch Property sits in the heart of this historic district, which the company describes as a safe jurisdiction for exploration with a long record of mining activity.
Where is most US gold produced?: According to USGS figures summarized by Farmonaut, Nevada produced about 64% of US gold and Alaska about 22% in 2025. More than 40 lode gold mines in 12 states produced an estimated 160 tonnes in 2025, worth about US$17 billion. Montana is outside those two leading states.
What is S-K 1300?: S-K 1300 is the US Securities and Exchange Commission's rule for mining property disclosure, which brought US reporting closer to international standards such as NI 43-101. It covers how exploration results, mineral resources and reserves are disclosed. Lannister Mining cites S-K 1300 and NI 43-101 compliant ounces as carrying a market premium.
Why does Lannister Mining see value in a US resource?: Lannister Mining states there is a clear premium in the market for S-K 1300 and NI 43-101 compliant gold and silver ounces in the USA, and that US-based companies with 43-101 compliant resources trade at a significant premium to peers. This is the company view, not an independent valuation.