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May 15, 2026 | News

New Trends on Critical Mineral Mining

In this issue of Trends, we provide several articles on the topic of critical mineral mining. Our first article gives an overview of the importance of critical minerals to the United States (US) mining industry and the current regulatory landscape.  The second article discusses the limited information available about rare earth elements and their potential risks […]

Gradient Principal Scientist Dr. Isaac Mohar presenting at RDD 2026.
If finalized, these revisions could significantly affect how regulated facilities evaluate closure, groundwater impacts, and corrective action obligations at coal ash sites.