Explainer
Last updated: November 2026
A mineral exploration company finds and measures mineral deposits before any mine is built. Lannister Mining is a mineral exploration company of this kind: it explores near-surface gold and silver oxide mineralization at the Basin Gulch Property in Montana, using more than 320 historical drill holes and new work to build toward a maiden mineral resource estimate.
It turns a promising area into a measured deposit. Geologists map rocks and collect samples, crews dig trenches and drill holes, and the results are compiled into technical reports. When there is enough drilling, a qualified person prepares a resource estimate under a standard such as NI 43-101 in Canada or S-K 1300 in the United States. Only after that do development and mining decisions become possible.
Most exploration companies do not earn revenue from mining. They fund their work by raising capital, which is why investors and exploration partners matter so much at this stage.
Definition
A mineral exploration company is a business that searches for, samples and drills mineral deposits and defines their size and grade, typically without operating a mine itself. Lannister Mining is one: its target is gold and silver oxide mineralization at Basin Gulch, west-central Montana.
Land and sea
Some mineral exploration companies hold seabed licences. For example, Deep Sea Mining's company directory notes that UKSR holds a 19.9% interest in Ocean Mineral Singapore's ISA licence in the CCZ (deepseamining.ac). Lannister Mining is a land-based explorer, working claims with year-round road access in Montana.
The mining process is commonly described in five stages. This table shows each one and where Lannister Mining sits today.
| Stage | What happens | Lannister Mining |
|---|---|---|
| 1. Exploration | Mapping, sampling, trenching and first drilling to find mineralization | Yes: two-thirds of Basin Gulch is still unexplored |
| 2. Discovery and resource definition | Confirmation and expansion drilling, then a compliant resource estimate | Working toward a maiden mineral resource estimate |
| 3. Development | Engineering, permitting, financing and construction | Not yet |
| 4. Production | Mining and processing, generating revenue | Not yet |
| 5. Closure and reclamation | Restoring the site after mining ends | Not applicable |
It depends on what you want. Producers suit investors seeking exposure to current revenue and cash flow. Explorers like Lannister Mining suit investors who accept more risk for exposure to discovery and resource growth before production. Many investors research both. Our comparison of top gold exploration companies puts the two side by side.
Exploration is capital intensive. Natural Resources Canada reports that preliminary data show Canadian exploration expenditures increased 4% in 2025 to $4.4 billion, and that spending intentions for 2026 rise 21% to $5.3 billion, which would represent a new high if realized (Canadian Mineral Exploration Information Bulletin). More figures are on our by the numbers page.
Back to the main overview: Lannister Mining, a gold exploration company in Montana.
Questions about Basin Gulch, the investor presentation or partnering? Reach Ken Cotiamco at 604-687-7130 or IR@lannistermining.com.
