Some tin got smelted making these? (6)
I believe the answer is:
ingots
'these?' is the definition.
The definition suggests an adverb but the answer is not.
'some tin got smelted' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'INGOTS' is hidden within 'tin got smelted'.
'making' is the link.
(Other definitions for ingots that I've seen before include "Brick-shaped blocks of metal" , "Lumps of metal, say gold" , "Bars, of gold say" , "Metal bars" .)