Using these three categories, researchers from Yale University led by Professor Thomas Graedel were able to see which metals and metalloids are most at risk within each group.

通过使用以上三种指标，托马斯•格雷德尔教授等来自耶鲁大学的研究人员得出了处于濒危状态的金属名单。

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She co-authored the report with Professor Thomas Graedel.

FORBES: INTERVIEW: Recycling Of Specialty Metals Needs Improvement - Yale Researcher