Ukraine's Mines Are Printed, Sensor-Fitted and Dropped by Drone
Small computers, adaptable casings and precise drone delivery are making antipersonnel mines harder to spot and clear. The danger is growing as Europe's commitment to the treaty banning them weakens.
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Nov 8, 12:00 UTC ·
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Cheap 3D-printed parts, small computers and drone delivery are changing Ukraine's antipersonnel mines, specialists say, creating weapons that threaten both people crossing contaminated land and teams trying to clear it. [1][2]
Explosive-ordnance disposal consultant Seán Moorhouse identifies those three technologies as the drivers of the change. Together, he told New Scientist, they allow inexpensive mines to carry features that would have cost much more only a few years ago. [1]
The threat reaches far beyond the front. In April, the UN Mine Action Service, or UNMAS, estimated that mines and unexploded ordnance contaminated 139,000 square kilometres, more than a fifth of Ukraine, affecting more than six million people. Those figures cover all explosive contamination, not just the newer mines. [2]
Antipersonnel mines are designed to be triggered by people. The emerging designs can replace a visible tripwire with a sensor, while drones can put them precisely on paths and near trenches, according to New Scientist's November 8 account. [1]
For clearance teams, even the act of searching can become dangerous. Paul Heslop, head of UNMAS in Ukraine, told UN News that some mines can respond to the magnetic field of a metal detector: "The piece of technology you're using to find the mine may actually activate the mine." [2]
Three technologies, one cheaper weapon
The first change is the casing. A 3D printer allows mines to take different shapes, sizes and colours, complicating the job of recognising them. New Scientist describes a curved green design nicknamed Caterpillar and urban versions made to resemble fragments of brick or concrete. [1]
That changes what someone must notice before taking another step. A recognisable manufactured object offers one kind of warning. Something that resembles rubble offers much less. Local production also allows small batches to be adapted rather than requiring every device to share a standard shape. [1][2]
The second change is inside. Microcontrollers, small computers that receive signals and control a device, can connect mines to sensors. New Scientist describes fragmentation mines that respond to magnetic fields, movement, heat or vibration, including a type nicknamed Jonik that can react to a nearby rifle. [1]
These devices extend the danger beyond stepping on a pressure plate or catching a wire. Heslop said sensor-equipped mines can detect deminers approaching on foot or in vehicles. The equipment brought to make a site safe can itself become part of the hazard. [2]
The third change is delivery. Drones can place blast and fragmentation mines on tracks, paths and around trenches, rather than distribute them randomly, according to New Scientist. UN News separately described basic models being printed near the battlefield and delivered by drone. [1][2]
Remote laying already dominates the wider mine threat. Heslop told UN News that most mines deployed in Ukraine are laid by artillery, rockets, helicopters or drones. A minefield no longer requires someone to walk across the ground to establish it. [2]
New Scientist also reported that human-rights organisations and a UN commission had documented Russian forces using drones to drop antipersonnel mines to target civilians in Kherson. That is an attributed finding about Russian conduct, separate from the broader evidence about how the technology works. [1]
There is no systematic count of how many newer 3D-printed or sensor-triggered mines have been deployed, or a casualty total attributable specifically to them. The emerging picture rests on specialist and institutional accounts rather than a measured inventory. [1][2]
A weaker ban as production gets easier
The Ottawa Convention prohibits the use, stockpiling, production and transfer of antipersonnel mines. It entered into force in 1999, seeking to stop weapons whose danger can outlast the fighting that put them in the ground. [3]
Its European membership has since contracted. Estonia, Latvia and Lithuania completed their withdrawals in December 2025, followed by Finland and Poland in early 2026. All five cited Russia's full-scale invasion of Ukraine in deciding to leave, according to Arms Control Today. [3]
Ukraine also communicated a decision to suspend the convention's operation. Treaty members rejected that position at their December meeting, saying the convention permits no such suspension. Arms Control Today also noted that a state engaged in armed conflict cannot withdraw. [3]
The legal prohibition still matters. But these departures weaken its reach just as the practical barriers to making adaptable mines are falling. A treaty can bind its members. It cannot, by itself, make a printer, a small computer or a drone difficult to obtain.
Clearance has a technology race of its own
Some features of remotely laid mines also offer clearance teams an opening. Heslop said many do not penetrate the ground, leaving them more accessible to detection by drones and advanced sensors. He described efforts to combine AI and high-resolution cameras with established equipment such as mine rollers. [2]
The challenge is scale. UN News put Ukraine's annual economic cost from explosive contamination at more than $11 billion. Heslop said that, since 2015, each day had brought more new contamination than clearance teams had removed. Some areas may require decades of attention. [2]
Removing a device is only part of the work. Mine action must also establish that land can safely return to productive use, Heslop said. A field that people cannot trust remains a field they cannot use. [2]
The immediate task is to change how people recognise danger and how specialists approach it. Moorhouse said demining agencies need to adapt both their training and their public-awareness programmes to the new weapons. [1]
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