The same with copper, silver, any commodity the hedge funds could load up on in hopes of playing the spike.

FORBES: There's No Such Thing As A Safe Haven In The Markets

Metals prices ended mixed during the reporting window of Oct.9, with gold, silver and copper prices down and platinum group metals higher.

FORBES: Funds' Bullish Positions In U.S. Precious Metals Futures, Options Continue To Grow -- CFTC

Silver Wheaton signs long-term purchase agreements with mining companies (typically gold and copper mining companies) that produce silver as a by-product.

FORBES: How Bad Will Weak Prices Ding Silver Wheaton's Earnings?

Copper volume has been higher than silver volume for much of 2012 so far, with the gap widening this month.

FORBES: CME Group's Hunnable: Copper-Trading Volume Sharply Higher; Big Rise During Asian Hours

Hellas Gold holds mining licenses for an area covering 317 square kilometers (122 square miles) with proven and probable reserves of lead, zinc, silver, gold and copper.

NPR: Masked Intruders Raid Greek Gold Mining Company

As of late morning in New York, all four of the precious metals and all six of the base metals were sharply lower, with losses around 1.5% or more for silver, platinum, palladium, copper, nickel and tin.

FORBES: Focus: Metals Slump On Year-End Liquidation, Scaled-Back Fed Expectations After GDP