Saudi mining giant Maaden has commissioned Finland-based Metso, a global leader in sustainable gold processing technologies, to deliver a gold processing plant for its Ar Rjum mine located in the Makkah region, approximately 200 km northeast of Ta’if, Ar Rjum. 

Advisory services for equipment installation, commissioning, and start-up are also included in the delivery under a separate service contract, which will be booked later, said Metso in a statement.  

The scope of work includes an end-to-end gold processing line from ore to doré consisting of a crushing station, related conveying systems, a grinding circuit including SAG and ball mills with auxiliary equipment, pre-leaching and CIL leaching circuit and final tailings thickeners, gravity separation circuit, elution plant and gold room technologies. 

In addition, it will provide process electrification, field instrumentation and automation, as well as detailed engineering for the processing plant.  

The order value is approximately €128 million ($149 million), of which €24 million ($28 million) was booked in the minerals segment’s 2025 third-quarter order intake, and €104 million ($121 million) in the fourth quarter. 

Advisory services for equipment installation, commissioning and start-up are also included in the delivery under a separate Service contract, which will be booked later.