1T of Cu = 10 houses, 50 cars, 500 fans
 

The image below is another very available learning aid for those interested in copper. And it seems likely that we all should be as we will see massively increased demand as several billion people shift from peasantry to the middle class over the next few decades.

<div style="clear:both"><a href="http://www.visualcapitalist.com/coppers-contribution-to-eus-circular-economy/"><img src="http://2oqz471sa19h3vbwa53m33yj.wpengine.netdna-cdn.com/wp-content/uploads/2015/03/copper-eu-circular-economy2.jpg" border="0" width="730px" /></a></div><div>Courtesy of: <a href="http://www.visualcapitalist.com">Visual Capitalist</a></div>