West Elk Extension (CO)

Survey type M-A (magnetic; derived from analog data)
Flown by U.S. Geological Survey
Date flown 09/73
Line spacing 1.6 (km)
Altitude 4115 (m) by barometer measurement
Total distance 627 (km)
References
Counties Delta - Gunnison - Montrose
Overlapping surveys

Data: Magnetic (M-A)