Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
EscanabaM/R-D121.9 m 9.60 km1,284 km
Iron Mountain - Menominee RegionM-D80 m above ground0.15 km37,553 km
MarquetteM/R-D121.9 m 4.80 km2,655 km
Delta '67M-Dz152.4 m above ground0.80 km7,966 km
Michigan Peninsula WestM-D152.4 m above ground1.60 km2,084 km
Iron Mountain - Chatham RegionM-D80 m above ground0.15 km38,474 km
Northeast WisconsinM-D304.8 m above ground0.80 km19,312 km
Wisconsin Tie LinesM-D304.8 m above ground0.80 km2,293 km