Abstract This book aims to help you to extract maximum value from aeromagnetic survey data. It shows how to integrate these data with geological data to build an interpretation that matches the objectives of your project. We emphasise that the main ingredients in a high-quality interpretation are astute use of the geoscientist’s brain and adequate time, not only to digest diverse clusters of data, but to integrate these into a working map that drives our project forward. The rewards for this (usually modest) effort and time can be substantial – a resource discovery, a quantum leap in understanding of local geological evolution or a new direction and momentum in exploration, to name a few.