MMD Group Ltd, the global manufacturer of material sizing and handling systems, has successfully completed the latest phase of its long-standing partnership with the Electricity Generating Authority of Thailand (EGAT), to deliver two new Sizer Stations for the Mae Moh lignite mine as the operation continues its transition from conventional crushing to modern mineral sizing technology.
The successful handover of Sizer Station 6 and Sizer Station 7 on 19 June 2026 is another milestone in a relationship spanning more than 30 years. MMD has provided Mae Moh with Sizer stations since 1993, and has delivered multiple Sizer Stations across successive development phases of the mine, supporting one of Thailand’s most significant energy-producing operations.
The latest project is part of EGAT’s broader overall plan to upgrade its material handling systems after approximately 40 years of reliance on conventional double-roll crushers. The organisation first engaged MMD in 2014 to evaluate alternative technologies that could reduce maintenance requirements, improve reliability, and lower operating costs while maintaining high production efficiency.
The latest project was delivered following a long-term technical evaluation process that began in 2014, when EGAT first engaged MMD to explore alternatives to its existing crushing systems. Having relied on conventional double-roll crushers for approximately 40 years, the operation was seeking a solution capable of reducing maintenance requirements, improving reliability, and lowering lifecycle operating costs while maintaining consistent production performance.
A key factor in EGAT’s decision was the opportunity to observe the MMD Sizer technology operating at Hongsa Power, a large-scale lignite mine-mouth power project located near the Thailand-Laos border, with mining operations and equipment duty profiles broadly comparable to those at Mae Moh. The successful performance of the installation under similar operating conditions demonstrated high reliability, lower power consumption, and significantly reduced maintenance requirements, ultimately reinforcing EGAT’s confidence in proceeding with the full-scale deployment of the technology at Mae Moh.
Each of the two new stations is designed to process average 1500 tonnes per hour of lignite, incorporating an MMD 1000 Series Sizer capable of handling a maximum feed size of 1,500 x 1,200 x 1,000 mm and producing a controlled product size of 300 x 300 x 300 mm. The installation also includes associated feeding and conveying systems, providing a complete in-pit sizing solution tailored to EGAT’s operational requirements.
The project further reinforces MMD’s position as a leading supplier of Sizer Stations in the region. Since 1993, MMD has supplied 20 of the 26 heavy Sizer Stations installed locally, representing approximately 77% of the installed fleet. This long-term presence reflects the company’s established engineering capability and extensive operational experience across large-scale mining applications.
Delivery of the Mae Moh project demonstrates MMD’s ability to combine global engineering expertise with strong local execution. Manufacturing and engineering were coordinated across MMD’s international network, while local partners in Thailand supported structural steel fabrication and specialist electrical control integration. This integrated approach enabled the project to be delivered safely and completed on schedule.
MMD Thailand’s experienced local engineers and project specialists played a critical role throughout installation and commissioning. Their ability to respond quickly to site challenges, resolve technical issues, and manage complex documentation and regulatory requirements was essential in delivering a successful outcome within a highly structured government project environment.
“This project is particularly significant because it reflects the confidence that is built over many years of successful operation,” said Montree Pichayathana, Managing Director, MMD Thailand.
“EGAT took a thorough and considered approach when evaluating new technology, and ultimately the performance of our Sizer Stations at nearby operations demonstrated exactly what MMD aims to deliver – high reliability, lower maintenance requirements, and long-term operational value. Completing this latest phase at Mae Moh is something we are extremely proud of. It highlights not only the capability of our technology, but also the strength of our global engineering network and the commitment of our local team and partners in Thailand who delivered this complex project safely and successfully.”
Since 1993, MMD has continued to support the evolution of the Mae Moh operation through successive phases of development, with each installation contributing to improved reliability and efficiency in material handling. The latest project represents the continuation of that long-term relationship and the ongoing modernisation of one of Southeast Asia’s most important lignite mining operations.
As mining operators increasingly focus on improving productivity, reducing maintenance demand, and lowering total cost of ownership, projects such as Mae Moh demonstrate the long-term value of modern mineral sizing technology in large-scale, high-throughput applications.
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