View Single Post
  #25  
Old 03-19-2019, 01:51 AM
mmartin798 mmartin798 is offline
Registered User
 
Join Date: Feb 2014
Location: Michigan
Posts: 659
Default

Here are a couple PDFs for your consideration on airborne magnetometer surveys:

https://www.geosci-instrum-method-da...5-181-2016.pdf

https://www.geosoft.com/media/upload...vey_Reeves.pdf

If there are enough other ferrous minerals in the area, that may help mask the location, but a solid steel door should still show if you take more passes closer together.
Reply With Quote