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Q&A How long does it take for trash to become a historical artifact (in the United States)?

How long does it take for trash like beer cans, old mattress springs, or glass bottles to go from trash and need to be packed out to being a historic artifact with archaeological significance?

2 answers  ·  posted 8y ago by Charlie Brumbaugh‭  ·  last activity 7y ago by System‭

Question united-states legality leave-no-trace