| Answer | Crossword Clue |
|---|---|
| ASBESTOS | Old furnace tape material |
| ORE | Blast furnace material |
| LEADORE | Material for a slag furnace |
| shadrach | a mass of unfused material from a blast furnace |
| shadrachs | SHADRACH, a mass of unfused material from a blast furnace |
| fettling | material thrown on the hearth of a furnace to protect it |
| fettlings | FETTLING, material thrown on the hearth of a furnace to protect it |
| fettled | to cover or line the hearth of (as a reverberatory furnace) with loose material (as sand or gravel) |
| fettling | the material with which the hearth of a puddling furnace is lined, usually a dolomite or refractory mixture |
