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US military develops small refineries for critical mineral substances

The U.S. Military said it plans to build a fleet small-scale refineries that will produce the critical minerals needed to manufacture bullets, armor, and other types of weaponry. This is a step to create domestic sources of niche materials, which Chinese miners have 'long controlled.

Plans, not previously announced, are being developed jointly by the U.S. Army, the Idaho National Laboratory, and the antimony and gold mining company Perpetua Resources. Antimony is the first mineral that the military wants to refine.

The Army has said that it will not produce large quantities of minerals for private consumption. However, a small-scale approach could provide a constant stream of building blocks, without having to rely on commercial refineries which are often much larger and primarily focused on bulk commodities, such as copper and iron ore.

Washington hopes to refine other minerals, such as?tungsten and rare earths, which the U.S. government considers critical.

Mark Mezger is a U.S. Army munitions adviser. He said, "We must find a way of making our own critical minerals that we can control and monitor within our borders."

The Army spent $30,000,000 over several years developing the refinery programme for antimony. Westpro Machinery, a private company, designed a refinery which can be transported within four shipping containers.

The refinery is able to produce between 7 and 10 metric tons of trisulfide (a type of antimony) annually, which is far less than what a commercial refinery could produce. However, it's enough to supply the Army in peacetime. Mezger stated that if a conflict breaks out, the Army could expand processing by adding more mini-refineries for ore from Perpetua’s Idaho mine.

He added that the Army was in discussions with other U.S. Antimony Projects to source additional antimony.

Primers, which are the explosive caps at the base of a bullet, are made from antimony trisulfide. The United States hasn't produced this version of antimony since the 1960s.

"You can't make primers without antimony trisulfide." Without primers you cannot make bullets. "An army without bullets would be a mere parade," Mezger said.

Idaho National Laboratory is testing the facility over the next six-months and if it passes muster will be operating it for Perpetua and the Army. Perpetua is backed both by JPMorgan Chase and the billionaire investor John Paulson.

Officials said that refineries for other minerals could be situated on military bases or government properties. In March, was the first to report that the Trump Administration was considering placing metal refining plants on U.S. Military bases.

The portable refinery will perform steps that are common in larger facilities, such as crushing rock. The type of mineral produced will determine the chemicals that are used. INL will also be involved in ensuring that the facility is not only a copy of existing refinery standards, but is also cleaner and more efficient.

In 2021, the Army learned that China had stopped shipping Trisulfide. This triggered a rapid drawdown of its one-year supply and a rush to find alternative supplies in India. Mezger explained that the refinery plan was borne out of a recognition that a domestic alternative was essential.

Jon Cherry, Perpetua CEO, said that the development of the plant should "pave a way for sustainable American mineral independence and resilient." (Reporting and editing by Ernest Scheyder)

(source: Reuters)