General approach:

Primary analysis: sampling, measurement of the surface and shallow area pollution, historical research, and …

Computerised plotting. Defining the methods to be used: computer-aided magnetic or electromagnetic EM for shallow area clearance, deep area clearance and deep search; manual scanning with metal detectors for surface clearance and shallow area clearance

Determining the limits of detection.

Danger evaluation, ecological and environmental impact.

Making a risk-analysis.