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Determining the Elevations
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Coast-Geodetic-Survey
Geodesy
Determining the Elevations
Using dynamite to excavate a bench mark hole.Note dirt flying out of hole.Level party of H. J. Oliver
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Using dynamite to excavate a bench mark hole.Note dirt flying out of hole.Level party of H. J. Oliver
3/18/2019 12:28:29 PM
Date:
1932
Credit:
C&GS; Special Report Oliver 1932
Location:
Northern California
Subject:
Geodesy
Subject:
Leveling
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