The U.S. Environmental Protection Agency and Mosaic Fertilizer on Friday argued that a federal appeals court should reject a lawsuit challenging the use of phosphogypsum, a radioactive byproduct of the phosphate industry, in a Polk County road project.
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EPA, Mosaic ask court to reject lawsuit challenging use of radioactive byproduct in Polk County
The issue of using phosphogypsum in road-building has long been controversial.
