The U.S. District Court for the District of Arizona last week denied a motion for a preliminary injunction to halt construction of the Hermosa Critical Minerals Project in southeastern Arizona. The project will establish a domestic source of manganese and substantially increase domestic production of zinc, which are essential to the steel used in military vehicles and naval vessels. In battery-grade form, manganese is also essential to the advanced lithium-ion batteries that power unmanned aerial vehicles, radios, and other defense equipment. The United States relies entirely on imports of manganese and almost entirely on imports of zinc, with China
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