Korea Zinc plans $7.4bn US minerals refinery with Washington’s backing

Korea Zinc unveiled a $7.4 billion plan to build a US-integrated nonferrous metals refinery largely financed by the US government, selling $1.9 billion of new shares to a US-government-controlled joint venture that will own roughly 10% of the company, while the US Department of Defense takes a 40% stake in the venture; the remaining $5.5 billion will be raised via $4.7 billion in US government/financial loans and $210 million in Commerce Department subsidies under the CHIPS and Science Act. The company will acquire two mining complexes and Nyrstar’s Clarksville, Tennessee zinc smelter (sale expected H1 2026) and aims to produce 540,000 tonnes per year (including 300,000t zinc) with phased commercial operations from 2029; shares jumped as much as 26% intraday and closed 4.9% higher. The project — the first new US zinc smelter since the 1970s — advances Washington’s push to reduce dependence on China for critical minerals and reshape supply chains, but faces material governance and execution risk after major shareholders Young Poong and MBK said they will seek to block the share issuance.

Analysis

Korea Zinc announced a $7.4 billion plan to build an integrated US non‑ferrous metals refinery, funding the project largely through US government support: a $1.9 billion share sale to a US‑government‑controlled joint venture that will own roughly 10% of the company, a 40% DoD stake in the venture, $4.7 billion in US government/financial loans and $210 million in Commerce Department subsidies under the CHIPS and Science Act. The financing structure and explicit US Department of Defense participation are unusual and materially de‑risk the capital stack while politicizing corporate governance; the stock reacted, spiking as much as 26% intraday and finishing +4.9%.

The plan includes acquiring two mining complexes and Nyrstar’s Clarksville, Tennessee zinc smelter (operational since 1978) with the asset sale expected to close in H1 2026, and phased commercial operations starting in 2029. Korea Zinc projects annual output of 540,000 tonnes across metals including 300,000 tonnes of zinc, 35,000 tonnes of copper, 200,000 tonnes of lead and 5,100 tonnes of rare earths, representing a strategic step in US efforts to reduce reliance on China for critical minerals and to rebuild domestic refining capacity.

Material execution and governance risks remain: major shareholders Young Poong and MBK (nearly 50% voting) have vowed to file to block the share issuance, alleging entrenchment of management, which could delay or derail financing and the asset transfer. While US government backing reduces financing uncertainty, timing risks around the H1 2026 closing, permitting, construction to 2029 and potential litigation create substantive event risk that investors must monitor closely.

Key Decisions for Investors

• Monitor legal filings and shareholder actions related to the proposed $1.9bn share issuance and the Young Poong/MBK challenge and avoid initiating new Korea Zinc positions until the litigation outcome or shareholder approval becomes clear
• If already long Korea Zinc, consider reducing position size or implementing downside hedges given acute governance and execution risk despite strong government backing
• Treat the H1 2026 Nyrstar asset closing, formal loan agreements for the $4.7bn and confirmation of the $210m Commerce subsidy as key binary catalysts; use confirmed milestones as buy signals
• Evaluate related supply‑chain exposure (US smelter equipment suppliers, construction contractors and downstream critical‑minerals processors) for selective opportunities if project financing and permits progress as planned