| Answer | Crossword Clue |
|---|---|
| smelt | to melt or fuse, as ores |
| smelts | SMELT, to melt or fuse, as ores |
| smelter | one that smelts (to melt or fuse, as ores) |
| smelters | SMELTER, one that smelts (to melt or fuse, as ores) |
| refractory | (of a substance) Resistant to heat; hard to melt or fuse |
| roasting | heat (inorganic material) with access of air and without fusing to effect change (as expulsion of volatile matter, oxidation, or removal of sulfur from sulfide ores) |
| roast | heat (inorganic material) with access of air and without fusing to effect change (as expulsion of volatile matter, oxidation, or removal of sulfur from sulfide ores) |
