'Last Blast' at the Thornton Quarry

A final blast at the Thornton Quarry on Monday removed the last 36,000 tons of rock from the quarry. Once excavation is complete, work connecting tunnels and final construction will begin to turn it into a reservoir for 7.9 billion gallons of flood water by 2015.

September 23, 2013 3:14 pm  • 
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