1) Radioactive waste
Found on
https://www.crosswordclues.com/clue/phosphogypsum
Phosphogypsum refers to the gypsum formed as a by-product of processing tricalcium phosphate rock into fertilizer with sulfuric acid. Phosphogypsum is produced from the fabrication of phosphoric acid by reacting phosphate ore (apatite) with sulfuric acid according to the following reaction: Phosphogypsum is radioactive due to the presence of natur...
Found on
http://en.wikipedia.org/wiki/Phosphogypsum
No exact match found.
