By Tim Binnall A group of treasure hunters who have doggedly pursued a purported cache of lost Nazi gold said to be buried in Poland have been granted permission to unearth a mysterious canister that was detected underground at the spot where the riches are believed to be hidden. The tantalizing quest began a few years ago when the organization known as the Silesian Bridge Foundation was given a diary allegedly written by a former Nazi SS officer wherein he revealed 11 different locations in which sizeable amounts of pilfered loot had been hidden at the close of World War...