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![Using gas drill to drill hole for bench mark theb1552.jpg Using gas drill to drill hole for bench mark](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1552.jpg?itok=s5gS_1v2)
Description
Using gas drill to drill hole for bench mark (Image credit: NOAA)
Credit
NOAA
Location
Southeast Alaska
Collection
Historic Coast & Geodetic Survey
Geodesy
Survey Marks
Keywords
Geodesy
Marks
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Using gas drill to drill hole for bench mark (Image credit: NOAA)