According to a recent Government Accountability Office report, worldwide availability of these materials may be limited to a few overseas sources, primarily China. GAO noted that the Defense Department is in the early stages of assessing its dependency on rare earth materials and is planning to complete a study by September 2010.
A potential disruption of supplies of rare earth metals would not only affect the U.S. military’s ability to produce high-end weapons, but would also jeopardize the nation’s adoption of green-energy technologies.
Source: nationaldefensemagazine.org
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