| The workhorse of the clay-based refractories are the so-called fireclay materials. |
| They are much more robust than fireclay refractories at high temperatures and in basic environments. |
| Britain also benefited from the availability of investment capital, furnace coal, fireclay, lead, and fine sand. |
| Toft was the first to add aluminous shale, or fireclay, a clay that can withstand high temperatures, to the paste for his earthenware. |
| The sandstone edges of the valleys yield building stone and fireclay at Elland. |
| Wall and floor tile is a thin material of fireclay with a natural or glazed finish. |
