- - Hadrian's heel
- - Heel: Lat.
- - Heel
- - Powdery mineral residue
- - Post-combustion mineral residue
- - Crumbly mineral residue
- - Name for lime based on its chemical composition
- - Metal combustion residue
- - Mineral residue
- - Metal oxide
- - Quicklime
- - Burned metal residue
- - Ashy residue
- - Broken and refuse glass.
- - Smeltery refuse
- - Metal residue
- - Furnace residue
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