How many times the metals can be recycled and used?
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Some materials can be recycled infinitely.Metals like steel, aluminum and copper are recycling stalwarts. Their properties hold steady no matter (how many times they are melted down ). Copper recycling has been common since it began in ancient times, and a large amount of all copper ever mined is probably still in use somewhere today . Today's discarded aluminum soft drink cans transform into new cans in as little as 60 days . Modern electric arc furnaces can melt steel scrap into new steel in less than an hour..
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