National Geodetic Survey

Earthquake Repair: Surveyors Checking Height Of Washington MonumentSurveyors are checking to make sure that the Washington Monument is still 555 feet, 5 1/8 inches tall.
Washington Monument Didn't Sink After EarthquakeGovernment surveyors have found that the Washington Monument did not sink further into the ground as a result of last year's 5.8-magnitude earthquake.
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