Page 9 - 2017/2018 Annual Update on Vale in Manitoba
P. 9

  Flight comparisons:
1940s — Fixed-wing aircraft electro-magnetic geophysical surveys flew at a height of 55 meters, with a spacing of 400 meters, reaching depths of 100 meters.
2018 — Helicopter electro-magnetic geophysical surveys flew at a height of 30 meters, with a spacing of 150 meters, reaching depths of 500 meters.
  Today’s airborne electro-magnetic geophysical surveys (right) are more sensitive and thorough than those performed in the 1940s.
2017/2018 Annual Update on Vale in Manitoba 7






























































































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