The blast occurred on Sunday 2nd May. Timed for 11 am. it blew in 4?
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Background: The blast occurred on Sunday 2nd May. Timed for 11 am. it blew in 4 seconds late.
It was the final spectacular in the construction of the ORD Rives dam in the few north of Western Australia (2,000 miles north of the state capital, PERTH).
The blast, which knocked over a 700 foot hill of quartzite was to produce rock for the Rock and Clay - fill dam.
1,200,000 panels of ammonium nitrate (just over 500 tons) gave a rock fall out of 1,000,000 cubic yards of rock.
The explosives were packed in 3 tunnels under the hill and the rock fell exactly where predicted and was being used an the dam within an hour.
The dam construction has fast recommenced after the "wet" season work had to stop for two and a half monthly while the ORD was in full flow. Millions at acre feet of water passed Our last year's work - the clam foundation which go down 100 feet - and this was found to be in perfect shape after the after the wet.
It's hope to have the clam completed and in use in October this year.
Constructors are DRAVO constructions (pronounced DR'VOH), an American firm and the Public Works Dept. of Western Australia.