Here is an excellent PDF file about silver prices. http://www.scribd.com/full/43355044?access_key=key-v1an1qp5ilxg6m65ae2
Adding to that info I have few finding on silver prices. Low prices for decades have meant that nobody has been starting new silver mines. Higher prices will attract new mine exploration, but finding new silver, setting up a mine and selling the silver could take near to a decade. In the meantime, restricted supply and icnreased demand could see prices syrocket.
