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New debris dams will revive California's hydraulic gold-mining industry
Note on completion, in Jan 1941, of 237 ft Upper-Narrows hydraulic debris dam on main Yuba River; project is key unit in series of four similar structures; dam is single arch type, with debris storage capacity of more than 118,000,000 cu yd; cost was $4,500,000; historical summary of hydraulic mining.
New debris dams will revive California's hydraulic gold-mining industry
Note on completion, in Jan 1941, of 237 ft Upper-Narrows hydraulic debris dam on main Yuba River; project is key unit in series of four similar structures; dam is single arch type, with debris storage capacity of more than 118,000,000 cu yd; cost was $4,500,000; historical summary of hydraulic mining.
New debris dams will revive California's hydraulic gold-mining industry
Min Met
1941
2 pages
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1929
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Three concrete arch dams for mining debris control
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Revive borescopic investigations of hydraulic structures
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