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It is widely known that when re-melting alloys are oxidized, some of the metal's lower melting temperature is lost through oxidation, and more metal must be added to maintain the desired alloy proportions. The author and others carried out experiments using a charcoal furnace in order to find the changes in alloy content when recycling using Bronze Age techniques. The findings reveal that prior knowledge of earlier practices was lost with the advent of technology, and that general conclusions regarding earlier scientific research based on current technologies cannot be established.
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