![From the Archives: A really big boom: 20-ton blast used to quarry stone in Mission Gorge in 1948 - The San Diego Union-Tribune From the Archives: A really big boom: 20-ton blast used to quarry stone in Mission Gorge in 1948 - The San Diego Union-Tribune](https://ca-times.brightspotcdn.com/dims4/default/e61f03b/2147483647/strip/true/crop/1850x1060+0+0/resize/1200x688!/quality/80/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2F2d%2F98%2F45457ade4de7ad7fcbb404462288%2Ftribune-july-9-1948-p1-photo.jpg)
From the Archives: A really big boom: 20-ton blast used to quarry stone in Mission Gorge in 1948 - The San Diego Union-Tribune
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20 Tons of Stones - large and small have been selected for the Coventry Japanese Peace Garden — HOME PAGE
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Demolition Rock Jaw Crusher Bucket 30-45 Tons Excavator Bucket Crusher 20 Tonnes - China Crusher Bucket, Bucket Crusher | Made-in-China.com
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Hydraulic Breaker Concrete Rock Hydraulic Hammer with Chisel 140mm for 20 Tons Excavator PC200 - China Excavator Hydraulic Hammer, Concrete Rock Hydraulic Hammer | Made-in-China.com
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