| 1 | Their mouths were full of gypsum. | |
| 2 | The resulting coal ash and gypsum are sold to the cement industry. | |
| 3 | Modern Paris sits atop massive formations of limestone and gypsum. | |
| 4 | The doctor had to hold his broken arm with a plaster cast. | |
| 5 | It was recommended that people used burnt hartshorn, the burnt shells of snails and burnt gypsum. |