| SLAG | Waste produced in the smelting or refining of ore |
| SLAGS | Wastes produced from refining ores |
| IRONMASTER | Is the head of the smelting plant a martinet to the apprentices? (10) |
| ABRAHAM | English manufacturer born in 1678 who perfected the smelting of iron with coke instead of charcoal |
| ABRAHAMD | English manufacturer born in 1678 who perfected the smelting of iron with coke instead of charcoal |
| DARBY | English manufacturer born in 1678 who perfected the smelting of iron with coke instead of charcoal (7,5) (See 1A) |
| ABRAHAMDARBY | English manufacturer born in 1678 who perfected the smelting of iron with coke instead of charcoal |
| INGOT | Mass of metal cast in a convenient form for shaping, re-melting, or refining (5) |
| ARSENIC | A toxic metalloid element; a by-product of the smelting of copper, lead, cobalt and gold ores (7) |
| TREACLE | Dark viscous syrup obtained during the refining of sugar (7) |
| BRONZEAGE | Period marked by the smelting of copper |
| YARDOFALE | Refining of already long drink (4,2,3) |
| MOTHERLODE | In mining, the main vein of ore in a deposit (6,4) |
| ROE | Something fishy in the processing of ore (3) |
| LODE | A vein of ore in the earth |
| REEF | A vein of ore in the earth (4) |
| REEFS | Veins of ore or ridges of coral |
| SEAM | Line of stitching or layer of ore |
| ODUBA | Surname of Ore, the former CBBC presenter who won Strictly in 2016 (5) |
| SEAMS | Strata of ore or coal suitable for mining (5) |
