Monday, September 13th, 1971. At the corner of Baker and Marylebone Streets in Westminster, London, the branch manager of Lloyd's Bank opened the vault at ten in the morning as usual. As the huge door swung away what he saw left him speechless. Chunks of concrete, wrecked safe deposit boxes, jewelry, and more compromising items were strewn across the floor.  

Was it really possible that criminals were able to break into a vault with thousands of tons of protection? Or were other elements at work?
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