Perchlorate and Selected Metals in Water and Soil within Mount Rushmore National Memorial

Author interview on report "Perchlorate and selected metals in water and soil within Mount Rushmore National Memorial, South Dakota, 2011–15," U.S. Geological Survey Scientific Investigations Report 2016-5030. An environmental concern to water resources within Mount Rushmore National Memorial has been the annual aerial display of fireworks at the memorial for the Independence Day holiday during 1998–2009.