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Dive operations for tide gauge installation.
Establishing horizontal control point for hydrographic surveying.
Establishing horizontal control point for hydrographic surveying.
Establishing horizontal control point for hydrographic surveying.
Establishing horizontal control point for hydrographic surveying.
Establishing horizontal control point for hydrographic surveying.
Establishing horizontal control point for hydrographic surveying.
Survey work at Dutch Harbor overlooking the harbor.
Backpacking horizontal control material to station site.
Establishing horizontal control point for hydrographic surveying.
Establishing horizontal control point for hydrographic surveying.
Establishing horizontal control point for hydrographic surveying.
Establishing horizontal control point for hydrographic surveying.
Establishing horizontal control point for hydrographic surveying.
Establishing horizontal control point for hydrographic surveying.
Seismological equipment formerly installed by the Coast and Geodetic S...
The geomagnetic observatory at Camp Colonna on the Canada/U.S
Cover of a 1965 Coast and Geodetic Survey brochure discussing the tsun...
Deploying a bottom-mounted gravity meter.
Operating Lacoste-Romberg gravity meter shipboard
Operating Lacoste-Romberg gravity meter shipboard
Lacoste and Romberg Gravity Meter
Buoy outfitted for measuring geomagnetic paramters.
Calibrating magnetic instruments
Calibrating magnetic instruments
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