Crossword puzzle clue "ore refining residue"

Here are the possible solutions for ore refining residue clue

Answer
Clue
Relevancy
slag
Clue
Ore-refining residue
Ore residue
smelting
Clue
Refining ore
slags
Clue
Forms a residue when smelting ore
abadan
Clue
Mideast oil-refining center
aruba
Clue
Isle famed for oil refining
Island for reclining or refining
Island for reclining and refining

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