DJI FlyCart 30 Maps Timor-Leste Manganese 800 Meters Down

Estrella Resources has deployed a DJI FlyCart 30 heavy-lift quadcopter in Timor-Leste to fly a drone-mounted geophysical survey that can image manganese mineralization down to 800 meters (2,625 feet) below the surface, the kind of depth that until recently required a helicopter to access.

The Australian explorer is using the FlyCart 30 to carry the MobileMTd system, an audio-frequency magnetotelluric platform developed by Expert Geophysics that maps subsurface resistivity using naturally occurring passive electromagnetic fields. The aircraft does the heavy lifting. The sensor does the geology.

“As activities continue to accelerate at Ira Miri, we’re thrilled to see the deployment of MobileMTd surveying. The ability to target potential depth extensions of the manganese bearing ore and detect lateral continuations under cover are truly exciting developments,” said Managing Director Chris Daws.

What 800 Meters Underground Looks Like With AFMAG

The technique flying under the drone is not a conventional ground-penetrating tool. Audio-frequency magnetotelluric, or AFMAG, uses electromagnetic signals generated by distant lightning strikes that travel through the atmosphere and induce secondary fields in the earth.

Different rock types resist or conduct those fields differently. A receiver flying overhead can measure the resulting resistivity contrasts and build a vertical profile of what is sitting under the surface.

The survey at Ira Miri samples at 5-meter (16-foot) intervals along a 5-kilometer (3.1-mile) corridor that runs along strike from the existing manganese pit. That spacing is dense enough to detect mineralized structures that earlier ground-based work could not resolve.

Three high-charge anomalies have already been identified that line up with previous manganese hits, which gives Estrella a defensible set of targets for a 2026 drilling program.

Why the FlyCart 30 Changed This Math

The DJI FlyCart 30 is the company’s first true heavy-lift platform, launched in 2023 and aimed squarely at the industrial use cases that previously required helicopters.

The aircraft carries up to 66 pounds (30 kg) of payload in standard dual-battery configuration, or up to 88 pounds (40 kg) in a single-battery long-range mode. Flight time runs to about 18 minutes with a full load, the operational range extends to 9.9 miles (16 km) with the O3 transmission system, and the airframe is rated for sustained heavy operations in conditions that would ground smaller aircraft.

A complete FlyCart 30 system lands in the $50,000 to $60,000 range fully kitted with the cargo case and dual operator setup. That is meaningful money for a drone but trivial compared to the cost of running a survey helicopter for the same job.

Helicopter-based geophysical surveys in remote terrain typically cost between $1,500 and $3,000 per line-kilometer once aircraft hire, pilot, fuel, and crew accommodation are factored in. A drone-flown survey using the same sensor package can hit a fraction of that, and the FlyCart 30 puts heavy sensors within reach of the platform.

That is the operational shift Estrella is exploiting. The math that used to favor helicopters now favors drones for short-range exploration work in difficult terrain, and Timor-Leste is exactly that kind of terrain.

The Manganese Story Behind the Survey

As The West reports, manganese is one of the critical minerals that has been quietly moving up the global priority list as the battery and steel sectors compete for high-grade supply. The metal is essential to lithium-manganese-iron-phosphate cathodes for electric vehicles, and it remains a foundational alloy element in steelmaking.

Estrella’s Ira Miri project has already produced a Category B stockpile of 27,371 tonnes at a weighted average grade of 28.64% manganese, with pit sampling returning grades as high as 60.22%. Commercial-grade manganese typically starts around 40%, which makes the upper end of that range significant.

The same airborne program is also covering the Werumata limestone prospect, which carries a 621-million-tonne maiden resource positioned for the industrial acid-neutralization market. The Werumata survey used drone-based LiDAR on 1,700 hectares (4,200 acres) over 15 days, flying at 80-meter (262-foot) altitude with 100-meter (328-foot) line spacing.

Stockpile export approvals are expected to close out in late May, with the exclusive sales process scheduled to launch in early June.

What This Says About Drone-Based Mineral Exploration

The Estrella program is one of the cleaner case studies for how heavy-lift commercial drones are reshaping the exploration phase of mineral projects.

A junior explorer in a developing country can now deploy a survey aircraft that maps geology to 800 meters of depth, do it at a price point that fits a small company budget, and turn the data around in a timeline of about three weeks of field collection plus two months of processing.

That capability used to belong to majors with helicopter contracts and survey crews flown in from Australia or Canada. The FlyCart 30 and platforms like it are democratizing the data layer of mineral exploration, and the practical effect will be more targets identified in more places by smaller teams.

DroneXL’s Take

This is the use case that the heavy-lift segment was built for. DJI’s FlyCart 30 has been searching for the industrial workflows where its payload capacity actually pays back, and drone-mounted geophysics for mineral exploration is exactly that.

A junior exploration company flying its own survey aircraft over a critical-minerals project in Timor-Leste is the kind of story that signals where the segment is headed. Expect more announcements like this through 2026 as other juniors copy the playbook and as DJI continues to push the FlyCart product line into mining, oil and gas, and emergency response.

The other thing worth flagging is the critical-minerals angle. Manganese is increasingly strategic, and a high-grade project in a politically aligned country is the kind of asset that will get attention from offtake buyers regardless of how the survey was flown.

The drone is just the tool. The story underneath is which countries and companies are quietly building the mineral supply chains the next decade will run on.

Photo credit: Estrella Resources, DJI.