Beneath the bustling streets of this Aussie CBD, millions of dollars worth of gold and silver sit in secret underground vaults housed in the basement of a nondescript office building. ▶️ Get the news first with The Daily Telegraph app:

Beneath the bustling streets of this Aussie CBD, millions of dollars worth of gold and silver sit in secret underground vaults housed in the basement of a nondescript office building. ▶️ Get the news first with The Daily Telegraph app:

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