http://buy-silver-gold.blogspot.com/2012/05/copper-poor-mans-gold-copper-as-bullion.html

"People already know that copper is valuable, just look at all the copper theft  that goes on. If and when a crisis happens, people will be collecting, hoarding and trading all the metals in my opinion. Nickel was up over $13.00 a pound just  this morning. Nickel definitely has value and can be traded. 90/10 silver coins  are a great way to aquire silver. you can still buy junk silver coins for melt. The dealers buy them for about 14-16 times face value and sell them for melt.  90% silver coins are quite popular. I long for the days when you could buy  Kennedy Halves all day long for melt. That was 4-5 years ago. Now its anywhere  from $2 to $6 over spot. People are paying a whopping 40% premium on Ebay. Junk  Silver Bags can be purchased at APMEX. I would stay away from copper and stick  with silver and gold. If you are concerned about barter buy 90% Silver.
 
Copper and Silver could work very well together as money in an economic collapse. I don't think just silver or gold will be used in a situation as that. I think Gold, silver and copper will be used together. Silver bullion and copper bullion I believe would be used for common transactions. Both silver and copper are useful as trade units if pressed into coin form. If we entered into a hyperinflationary environment the countries that hold dollar reserves would be looking for something to trade the dollar for and I believe it will be copper, oil etc. Copper is priced in dollars so as our dollar is debased the price of copper will rise as well. A dollar collapse would cause prices of all commodities to sky rocket. Food riots, hoarding etc. Preppers should prepare for every scenario and copper bullion can't hurt."

 
http://copperinvestingnews.com/12587-copper-climbs-on-demand-expectations-from-china.html

Reuters reported copper prices were on the rise on Thursday as speculation on demand that China could recover by the end of the year. However, currency concerns from the Eurozone and a firmer US dollar kept a tight rein on the red metal’s progress.

As quoted in the market news:

"Benchmark copper on the London Metal Exchange (LME)rose from two-week lows hit in the previous session to close at $8,175 a tonne from a close of $8,120 on Wednesday.

Data showed orders for long-lasting U.S. manufactured goods fell sharply in
August, suggesting the main engine of economic growth was stalling, pointing to continued prospects of measures to support the economy. These were seen as being supportive of copper prices."