The most common and most likely answer to this crossword clue is the 9 letter word SCAVENGED
I've seen this crossword clue in The Guardian
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More clues leading to the result SCAVENGED
Buddy explains!

The straight part
We know that "Salvaged" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case salvaged = scavenged.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SCAVENGED mean?
SCAVENGED verb- To collect and remove refuse, or to search through refuse, carrion, or abandoned items for useful material
- To remove unwanted material from something, especially to purify molten metal by removing impurities
- To expel the exhaust gases from the cylinder of an internal combustion engine, and draw in air for the next cycle
- To feed on carrion or refuse