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Using dynamite to excavate a bench mark hole Picture

Using dynamite to excavate a bench mark hole

Using dynamite to excavate a bench mark hole. Note dirt flying out of hole. Level party of H. J. Oliver

Photo Category: Geodesy - Leveling
Photo Location: Northern California
Photo Date: 1932

Author: C&GS Special Report Oliver 1932/ NOAA

License: Public Domain Mark 1.0 (Public domain)
420 x 640 48.29 KB
904 x 1380 227.04 KB
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18th October 2015
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