I'm a little confused about what to do with all of my coins. It looks like all current quarters, dimes, and nickles are made out of mostly copper... should we just stash all of our coins?!
According to Wikipedia and my calculator:
*Post '65 quarters are 75% copper and weigh 5.67g, meaning they have 4.25g of copper.
*Pre '82 pennies are 95% copper and weigh 3.11g, so they contain 2.9545g of copper
*Nickels are 75% copper and weigh 5g meaning they contain 3.75g of copper
*Dimes are 2.268g and 91.67% copper, so they contain 2.07g of copper
I would assume quarters and nickles are a good bet in terms of composition. I think the reason people would go for pennies is they are easily recognizable? For now, I'm going to hold on to my coins until we hear more about what congress is doing with our coinage.
Also here is a pretty recent post about nickles from survival blog: http://www.survivalblog.com/nickels.html