Unstoppable silver?

It looks like the silver price just won’t be stopped. Yesterday it surged by more than a dollar and breached the $42 an ounce mark to “a fresh 31-year high”, a phrase that may finally be replaced with simply “a record high” in another week or two based on the 1980 high for the silver price of about $48 an ounce and its current trajectory (click to enlarge image):