Disposal of unclaimed cargo requires notice to the importer and prior customs permission for sale under statute. Disposal of unclaimed or uncleared imported goods is permitted where goods are not cleared, warehoused, or transhipped within thirty days of unloading; the custodian may sell such goods only after issuing notice to the importer and obtaining prior permission from Customs, with the statute prescribing the manner of disposal and apportionment of sale proceeds.