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You searched for: Start Over Dams Remove constraint Dams Author Lawrence, C.D. Remove constraint Author: Lawrence, C.D. Subject Construction workers Remove constraint Subject: Construction workers Subject Drilling and boring machinery Remove constraint Subject: Drilling and boring machinery

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  • 1. [Image] Gerber Dam Core Drilling Program
    5212
    CN-12-200-59A Klamath Project, Oregon-California. View showing hollow core drill bit; October 1969; Bureau of Reclamation photo by C.D.Lawrence
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  • 2. [Image] Gerber Dam Core Drilling Program
    5213
    CN-12-200-60A Klamath Project, Oregon-California. The driller and his helper are adding an extension to drill bit. Pictured from left to right are: Angelo Doveri, owner-operator of hydraulic crane (at ...
    Citation