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Dams
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Drilling and boring machinery
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1. [Image] Spillway Channel, Clear Lake Dam, view of the Sacramento drill crew and rig, drilling on Hole +102
P12-200-2862A Klamath Project, Region 2 - Oregon-California; September 24, 1965; Bureau of Reclamation photo by D. W. SteinCitation -
2. [Image] Gerber Dam Core Drilling Program
CN-12-200-45A Klamath Project, Oregon-California. Panoramic view of core drilling operation from west walkway on top of dam; October 1969; Bureau of Reclamation photo by C.D.LawrenceCitation