Thunder Mountain Gold, Inc.
Despite its name, Thunder Mountain Gold's main asset is a zinc-led deposit: the South Mountain Project in Owyhee County, Idaho, a historic Anaconda-developed polymetallic carbonate-replacement deposit of zinc, silver, gold, copper and lead on private land. Its October 2023 estimate holds 40,200,000 lb of zinc in the measured and indicated categories, with 953,000 oz of silver and 13,300 oz of gold in the same 223,000 tons, and no reserves. A 10,000-foot 2026 drill program is underway to expand the resource, alongside engineering work toward a PEA. The company also owns 100% of the Trout Creek gold exploration project in Nevada's Reese River Valley, adjacent to the Barrick-Newmont Nevada Gold Mines joint venture.
Notable vs. Peers
- Financials score of 2.3/10 is weaker than the peer average of 4.4/10.
Lifecycle Milestones
Not yet determined: mill, tailings facility, grid power.
Jurisdiction (40%)9/10
Idaho: Fraser PPI 2025 is 77.16 of 100 (rank 27 of 68), which maps to 9 on this site's scale. Idaho and Nevada are top-tier US mining jurisdictions with well-established permitting regimes; South Mountain's private-land status further streamlines permitting.
Infrastructure (40%)6.4/10
Confirmed road access at South Mountain Project, Owyhee County, Idaho; existing mill, grid power, and tailings facility not yet researched, counted at a neutral 5/10 until established.
Nearby producing mine (20%)Not yet researched
No producing mine within 50 km in our reference list (nearest listed: Turquoise Ridge / Twin Creeks (Nevada Gold Mines), 163 km). That list doesn't cover every mining district yet, so a longer distance isn't scored as remote.
Acquisition Susceptibility
A relative ranking of how closely this company matches the profile of juniors that have actually been acquired — not a probability, and not a reason to buy. Acquisitions are rare: only a few dozen significant deals happen a year across a universe of thousands of juniors, so even a high score here describes a long shot. The strongest signal in the research, a producer that already owns part of the company, is scored from its disclosed strategic shareholders. A producer that is a joint-venture or earn-in partner on the project, rather than a shareholder, isn't captured yet.
How this score is built
- Disclosed pending dealSub-score: Not scored
No pending acquisition or merger disclosed (checked)
Not scored: having no deal in flight isn't held against a company.
Weight 26.25% - Producer's strategic stakeSub-score: Not scored
No producer holds a disclosed stake on file (holder register researched) See holders
Not scored: most juniors that do get bought had no prior toehold, so a missing stake says little either way.
Weight 25% - Distance to a producing mineSub-score:1.2/10
Nearest producing mine: Turquoise Ridge / Twin Creeks (Nevada Gold Mines), 163 km
10 next to a producing mine, 8 at 20 km, 5 at 50 km, 0 beyond 200 km.
Weight 22.5% · 46% here - Lifecycle stageSub-score:3.5/10
Stage: Resource Definition
Feasibility and permitting score 10, where deals cluster, and production 5.5; earlier stages score less, down to 1 at grassroots.
Weight 15% · 31% here - JurisdictionSub-score:9/10
United States: jurisdiction score 9/10
Our jurisdiction score, used as is: higher means lower political and permitting risk.
Weight 6.75% · 14% here - CommoditySub-score:2/10
Primary commodity: Zinc
Gold 10, copper 8, silver 5, nickel and uranium 4, others 2: most majors' deals are for gold.
Weight 4.5% · 9% here
Weight is each input's share of the full score. “Here” is its share of this company's score: inputs that aren't scored are left out and the rest re-weighted, never counted as zero.
Your Rankings
Management Team
President, CEO and Director of Thunder Mountain Gold, Inc. 40+ years in mining/finance; with company leadership since 2006 (prior CFO/VP-IR/Secretary-Treasurer); former GM of Dakota Mining's Stibnite operation; roles at Hecla Mining; B.S. Geological Engineering, University of Idaho.
Chief Operating Officer of Thunder Mountain Gold, Inc. 30+ years in environmental management, permitting, mine development; senior roles at Barrick Gold, McEwen Mining, Nevada Vanadium.
VP of Operations at Thunder Mountain Gold, Inc. 38+ years in mine development/operations/closure/permitting; most recently Project Manager, South Mountain Mines (underground drilling).
Executive Assistant at Thunder Mountain Gold, Inc. 15+ years supporting senior investment banking teams (Stifel, Piper Sandler); B.S. Business Administration, San Diego State University.
Insiders, Investors & Smart Money
Notable shareholders and insiders whose involvement is worth knowing about, plus what we're seeing from institutional/large-investor activity.
Checked and nothing creditable could be confirmed. Thunder Mountain disclosed in December 2025 that MFD Investment Holdings SA, with Ocean Partners, had entered an options review phase aimed at near-term production at South Mountain, but the terms of that arrangement are not available and it could not be established as a funded earn-in or an equity position. Two small private placements closed in October 2025 and July 2026 with no participants named, and the company publishes no shareholder register. Institutional ownership is nil.
No notable insiders tracked for this miner yet.
Reports, Presentations & Documents
Thunder Mountain Gold is advancing the South Mountain project in Owyhee County, Idaho, a historic Anaconda-developed polymetallic carbonate-replacement deposit of zinc, silver, gold, copper and lead on private land, and also owns 100% of the Trout Creek gold exploration project in Nevada's Reese River Valley. Despite its name, the company's leading metal is zinc: South Mountain's resource, effective 16 October 2023, contains 40,200,000 lb of zinc in the measured and indicated categories (12,600,000 lb measured and 27,600,000 lb indicated), in 223,000 tons grading 9.02% zinc, 4.27 oz/t silver and 0.059 oz/t gold that also hold 953,000 oz of silver and 13,300 oz of gold, plus 959,000 tons inferred with 145,000,000 lb of zinc, and no reserves. At the estimate's own prices zinc is about 47% of the measured and indicated metal value, gold about 21% and silver about 19%. A 10,000-foot drill program in 2026 is designed to expand the resource along strike and test district-scale copper-gold targets, alongside engineering work toward a preliminary economic assessment, and the company closed a US$5.66M private placement in August 2026 to help fund it.