Full-Scale Prototype Unveiled, Targeting 2028 Lunar Mission
U.S. heavy machinery manufacturer Vermeer and lunar resource development company Interlune jointly unveiled a full-scale prototype of their all-electric lunar excavator on August 8, marking a new phase in lunar mining technology. The excavator, named Interlune, can process 100 metric tons of lunar rocks and soil per hour and features preliminary helium-3 extraction capabilities. The two companies also announced an expansion of their strategic partnership to accelerate the development of infrastructure supporting a permanent lunar base.
Interlune CEO Rob Meyerson stated, "Autonomous mobility and heavy-duty excavation are foundational to establishing a permanent lunar settlement. Our collaboration with Vermeer has propelled us from prototype development toward scalable systems, laying the groundwork for lunar resource harvesting." With over 75 years of experience in heavy machinery, Vermeer’s engineering team has successfully addressed the challenges posed by the Moon’s extreme environment.
According to the companies’ plans, the excavator is expected to achieve mission-ready status by 2028, aligning with NASA’s lunar base program timeline. Interlune has secured funding from multiple sources, including the U.S. Department of Energy, NASA’s TechFlights program, and a National Science Foundation Small Business Innovation Research award, accumulating a total of $18 million in funding.
Helium-3 Extraction Emerges as Global Tech Industry Focus
Helium-3, a light isotope of helium, is extremely rare on Earth but is a critical material for advanced technologies such as semiconductor manufacturing, optical components, electric vehicle chips, and quantum computing. As Earth’s helium resources dwindle, the abundant helium-3 deposits on the Moon’s surface have become a target for global development. The scientific community widely believes that helium-3 concentrations in lunar soil are significantly higher than on Earth, particularly at depths of up to three meters below the surface.
Interlune CTO Gary Lai noted, "High-efficiency, large-scale lunar excavation and helium-3 extraction technology has no precedent. Vermeer’s rapid technological response has accelerated our testing progress beyond expectations. The current prototype can excavate lunar regolith from depths of up to three meters and perform preliminary separation using an integrated system." Interlune plans to execute its first lunar mission before 2030, positioning itself as the world’s first commercial lunar program dedicated to helium-3 extraction.
Helium-3 also holds significant value in the field of nuclear fusion energy and is seen as a potential solution for future clean energy. Currently, the global helium-3 supply primarily comes from nuclear weapons tests and nuclear reactors, with extremely limited sources. Successful lunar helium-3 extraction could revolutionize the global energy and technology industry supply chains.
Extreme Lunar Environment Tests Technological Limits
The Moon’s surface presents unprecedented challenges for mechanical equipment. Lunar temperatures fluctuate dramatically between 110°C and -170°C, and the lack of an atmosphere renders traditional internal combustion engines inoperable, making electric machinery the only viable option. However, conventional batteries and motors experience significant performance degradation in extreme low temperatures, while lunar dust causes severe wear on mechanical components.
To address these issues, Vermeer’s engineering team developed specialized thermal insulation materials and active temperature control systems to ensure stable operation of batteries and motors in extreme conditions. The team also created dust-resistant coatings to minimize wear from lunar dust. Interlune revealed that in simulated lunar environment tests, the excavator maintained a processing capacity of 100 metric tons per hour under extreme temperatures, demonstrating strong environmental adaptability.
Japanese construction machinery giant Komatsu has also been developing a lunar excavator since 2023 and showcased a scaled prototype at CES 2025. Komatsu’s design similarly emphasizes thermal control and electrification to cope with the Moon’s extreme temperature variations. However, Vermeer and Interlune’s collaboration has surged ahead, with the unveiling of their full-scale prototype signaling a new stage in the lunar mining technology race.
International Regulations and Economic Feasibility Pose Key Challenges
Despite significant technological advancements, lunar resource extraction faces multiple challenges. Current international space regulations lack clear consensus on the ownership rights of lunar resources, and countries remain divided on the issue of resource allocation. While the United Nations Outer Space Treaty stipulates that lunar resources cannot be appropriated by any single nation, it does not explicitly prohibit commercial extraction activities, leaving room for future legal disputes.
Economic feasibility is another critical consideration. Transporting helium-3 from the Moon to Earth involves overcoming high transportation costs, and no mature commercial transportation solutions currently exist. Experts estimate that lunar helium-3 extraction will need to reach a certain scale to achieve profitability, necessitating the establishment of comprehensive lunar infrastructure and transportation networks.
NASA’s lunar base program aims to establish a permanent human presence on the Moon by the 2030s, with helium-3 extraction playing a key role in achieving self-sufficiency. Interlune has stated that its technology will not only support NASA’s missions but also provide a stable helium-3 supply for Earth’s semiconductor industry, helping to alleviate global supply chain tensions. As technology continues to advance, the commercialization of lunar resource extraction is accelerating, but international cooperation and regulatory refinement remain essential prerequisites.
