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The boss of online marketplace Overstock.com has revealed he has stashed away $10million in gold and silver in the Utah wilderness as part of a back-up plan to survive any collapse of the U.S. financial system.

CEO Patrick Byrne has also amassed three months’ worth of food and other supplies for his staff so that the website, based in Salt Lake City, can keep functioning should the nation’s major institutions collapse.

Byrne revealed his doomsday scheme this week, which he said would look after all of the company’s 1,500 employees should the worst happen.