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Brimstone uxo survey being carried out

UXO Survey_

Our UXO surveys are specialised site-based services designed to explore beneath the surface and detect buried ferrous objects. These surveys come in two key forms: intrusive and non-intrusive. Our state-of-the-art equipment enables us to clear wide open areas up to 6m below the ground, down to single pile locations up to 25m deep.

Non-intrusive uxo survey

Non-intrusive UXO Survey_

Using state-of-the-art equipment in a drone, towed or pushed method, we can clear large areas up to 6m in depth. We collect technical data, processed in house by our geophysics team, lead by Dr Sumana Basu.  

Our non-intrusive survey platforms are detailed below.

A five-channel system for the detection of ferro-magnetic anomalies in small to medium sized areas carried out by a specialist two-person team. 

An eight-channel gradiometer system for the detection of ferro-magnetic anomalies in large areas carried out by a specialist two-person team. Towing the sensors behind an all-terrain vehicle and the wider sensor array increases time-efficiency without detriment to resolution or quality. 

Our specialised drones enable us to carry out UXO surveys in areas where a pushcart or towed-array system cannot reach. Brimstone is proud to have been the first company, both within the UK and overseas, to market drones for UXO surveys, and we continue to develop our systems to ensure maximum benefits for our clients.

Brimstone dots u
Brimstone uxo survey rig

Intrusive UXO Survey_

Deploying to site one of our rigs, we can survey single pile positions or clusters for any deep intrusive works. For large scale excavations, we can provide a site-wide matrix clearance, offering complete survey solution to a maximum depth of 25m across a large area. Our system is triaxial, meaning it models targets in three dimensions, this allows more than one pile position to be cleared per one survey position.

A key benefit of this methodology is that it can be deployed to brownfield sites or sites with areas of made ground – sites that would usually be unsuitable for a non-intrusive methodology. Additionally, greater depths can be achieved with this system when compared to the non-intrusive system.

Where anomalies are detected, the data will be analysed and assessed by our in-house geophysicists. If an anomaly models the characteristics of a UXB, our operations team will discuss and plan the next step in the UXO risk mitigation process.

Drone uxo survey

Drone UXO Survey_

Time, safety and budgetary constraints are a factor in all construction related projects. Drone systems routinely deliver superior survey coverage, surveying up to five times as many hectares in a single day compared to the push-cart system. Drone systems are also highly suited to difficult to access areas.

Our drone systems are highly suited to accessing challenging or remote locations with ease, providing comprehensive surveying solutions in diverse environments. Penetrating up to 6 metres below the surface, we check for potential hazards by using magnetometry to detect ferrous materials and map magnetic signatures. We then send the results back to our experienced geophysicists for analysis.

Our radiation sensors are designed to autonomously capture gamma sources by following pre-determined flight waypoints. When they detect radiation, it immediately triggers an alert, complete with GPS coordinates, which is transmitted to the operational base station. These coordinates are then plotted on radiation maps, allowing for real-time comparison against highlighted changes in isotopes across the entire survey area.