When the St. Francis Dam broke, it was considered the worst civil engineering disaster in California's history. Are we in danger of history repeating itself? Watch and find out. MASHABLE ACROSS THE WEB Mashable.com: http://on.mash.to/1hCcRpl Facebook: http://on.mash.to/2lyOwmZ Twitter: http://on.mash.to/1Udp1kz Instagram: http://on.mash.to/1U6D40z Mashable is a leading global media company that informs, inspires and entertains the digital generation.
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