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Box 1

 Container

Contains 1 Result:

Seattle (Wash.). Dept. of Lighting, 1954-1958

 Item — Multiple Containers
Scope and Contents

Reports, maps, charts, plots, photographs relating to artificial freezing of groundwater in foundation work for Gorge High Dam, Skagit Hydroelectric Project.

Partial Contents: First stage freezing operation temperature data, plots, August 1956 -July 1958 --First stage freezing isotherm charts --Expanded elevation of second stage ice wall.

Dates: 1954-1958