| Answer | Crossword Clue |
|---|---|
| limestone | rock consisting chiefly of powdered calcium |
| ammonals | high explosive consisting chiefly of powdered aluminum, ammonium nitrate, and TNT |
| superphosphate | mixture of calcium acid phosphate and calcium sulfate prepared by treating phosphate rock with sulfuric acid: used chiefly as a fertilizer |
| superphosphates | mixture of calcium acid phosphate and calcium sulfate prepared by treating phosphate rock with sulfuric acid: used chiefly as a fertilizer |
| glauberite | a greyish-white mineral, sodium calcium sulphate, found chiefly in rock salt |
| glauberites | GLAUBERITE, a greyish-white mineral, sodium calcium sulphate, found chiefly in rock salt |
