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Natural Resources and Environment (101 - 150 of 3,394 items)

Mineral Resources: Mineral Volume, Value, and Revenue

GAO-13-45R: Published: Nov 15, 2012. Publicly Released: Dec 12, 2012.
Air Emissions and Electricity Generation at U.S. Power Plants

GAO-12-545R: Published: Apr 18, 2012. Publicly Released: May 18, 2012.