Salvage

Salvage means 'rescue' and as such may refer to:

Marine salvage, when a ship, its cargo and sometimes the crew are rescued from danger
Vehicle salvage, saving parts of a machine that will be garbage if they are not used
Salvage data, the process of getting the data from damaged, failed or corrupted digital storage media
Salvage archaeology, an archaeological survey and excavation done in places that might be in danger
Salvage ethnography, the act of saving a record of what was left of a culture before it disappeared

In business

Waste sorting
Salvage value, the guessed value of something when it becomes useless to the owner