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Airway Beacons
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Survey Mark Recoveries

2021

Found or Confirmed Destroyed (5)

Q 145

USGS (Unstamped, Acadia #1)

19197-150

NPS (Unstamped, Acadia #8)

841 3320 TIDAL 13

Popular Pages

Map of Airway Beacons
Airway Beacons—Western U.S.
Airway Beacons—Eastern U.S.
Local Control Monument Databases
NGS Historical Geodetic Control Diagrams
USGS Datasheets
Resurvey of the Heart of the Grand Canyon

Recent Recoveries

PROP COR REF EL 329.99
327.50
X 248
B 46
IRVING AZ MK

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