Report to Congress: Wastes from the Extraction and ...
metallic ores (with special emphasis on copper, gold, iron, lead, silver, and zinc), uranium overburden, and the nonmetals asbestos and phosphate rock. The Environmental Protection Agency's findings on oil shales are summarized in Appendix A of this report. EPA selected these mining industry segments because they generate large quantities of wastes that are potentially hazardous and because ...