Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

pl23_geod0560.jpg

Image

Download ( 1.23 MB )

Permalink

https://www.noaa.gov/media/digital-library-photo/pl23geod0560jpg

Description

David R. Doyle, NGS, atop the Washington Monument during GPS surveyingoperations.

Location

Washington, D. C.

Keywords