Context

Context of Rare earths : hearing before the Subcommittee on Energy of the Committee on Energy and Natural Resources, United States Senate, One Hundred Eleventh Congress, second session, to examine the role of strategic minerals in clean energy technologies and other applications, as well as legislation to address the issue, including S. 3521, the Rare Earths Supply Technology and Resources Transformation Act of 2010, September 30, 2010
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