Phosphogypsum is a waste product of the phosphate fertilizer mining business — a major industry in the state of Florida. Phyosphogypsum is accumulating at multiple waste sites in around the state. The industry would like to put their phosphogypsum to use by incorporating it into various building materials, thus ridding themselves of the waste and potentially turning a profit on its sale. Recently, the EPA approved the use of phosphogypsum-containing materials in road construction. The decision is controversial because phosphogypsum contains radium, which means it will release radon into the air. The question is whether it will release enough radon to pose a health threat to humans. Read the following two articles and answer the questions below.
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