UXO Surveys
Non-Intrusive Geophysical Surveys
Non-intrusive geophysical surveys are an effective method for detecting shallow subsurface ferrous anomalies, particularly on greenfield sites. Under optimal ground conditions, these techniques can detect large ordnance, such as 50kg bombs, at depths of up to 4 metres, with smaller UXO identifiable at shallower levels. This approach enables the rapid survey of large areas with minimal disruption to your worksite.
By configuring an array of magnetometers on a portable, pushable, drone or towable frame, raw, auditable ferromagnetic data is captured across the terrain.
This data is then thoroughly analysed by a qualified geophysicist, who models and evaluates each detected anomaly to determine its potential as UXO. In line with the project's UXO threat assessment, a targeted list is generated, allowing for the identification of suspect UXO that can either be avoided or selected for further physical investigation. This method ensures efficient and accurate detection while minimising impact on your project timeline.
Intrusive Geophysical Surveys
Intrusive geophysical surveys are primarily used to detect subsurface ferrous anomalies on greenfield and brownfield sites where deep piling or boreholes are planned. In optimal ground conditions, these techniques can identify large ordnance, such as aircraft bombs, at significantly greater depths than non-intrusive surveys.
By hydraulically pushing or drilling a single magnetometer vertically into the ground to the required depth, raw, auditable ferromagnetic data is captured. This data is then carefully analysed by a qualified geophysicist, who models and evaluates each detected anomaly to assess its potential as UXO. Anomalies suspected to be UXO can either be avoided or selected for further physical investigation, ensuring precise detection and enhancing site safety while minimising project delays.