The Department of War announced Aug. 28 a $100 million follow-on equity investment in Atalco to secure the sole remaining domestic alumina refinery in the United States. The investment aims to prevent complete foreign dependency for a material critical to defense manufacturing.
Alumina is the processed form of bauxite required to produce aluminum, which is used in aircraft, ships, armored vehicles, packaging, and construction, the Department of War said. The loss of the last U.S. alumina refinery would leave American aluminum production entirely dependent on foreign-sourced feedstock.
The investment is part of the administration’s broader domestic supply chain security strategy. The Department of War has made a series of critical mineral investments in recent weeks, including $750 million for a Brazilian rare-earth project and $35.6 million for copper, cobalt, and germanium production in Alaska.
For the defense industrial base, the alumina refinery is an essential link in the chain that produces aluminum for military aircraft such as the F-35 fighter jet and for armored vehicles and naval vessels. A supply disruption at this single facility could cascade through defense production lines.
The broader aluminum industry also depends on domestic alumina supply. The United States once had multiple alumina refineries, but a combination of low-cost foreign competition and aging infrastructure has reduced the domestic footprint to a single operating facility.
The $100 million equity investment is structured to keep the refinery operational and support necessary modernization, the Department of War said. The investment follows an earlier commitment to the facility and reflects the department’s assessment that market forces alone cannot sustain the operation.