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From the Archives: A really big boom: 20-ton blast used to
From the Archives: A really big boom: 20-ton blast used to
From the Archives: A really big boom: 20-ton blast used to quarry stone in Mission Gorge in 1948
On July 9, 1948, 20 tons of explosives were used to bring down more than 90,000 tons of rock in Missing Gorge in what was then a record for a commercial blast in the county.
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