Thiess has secured two five-year contracts in Mongolia to deliver underground mining services at Rio Tinto–managed Oyu Tolgoi and asset management services for Energy Resources’ Ukhaa Khudag coal mine. The Oyu Tolgoi scope centres on long-term underground development and production support at one of the world’s largest copper-gold deposits, while Ukhaa Khudag work focuses on maintaining a large truck–shovel fleet and fixed plant. The deals extend Thiess’ Mongolian presence and signal continued demand for outsourced underground and maintenance expertise in complex brownfield operations.

Belt cleaner specialist Martin Engineering, led by R. Todd Swinderman (President Emeritus, CEMA), sets out guidance for positioning primary, secondary and tertiary cleaners on high‑volume conveyors where structural steelwork, limited chute space and access platforms often prevent ideal installation. The guidance focuses on locating primary cleaners at the head pulley, secondary units on the return strand just beyond the discharge, and tertiary or wash‑box systems further downstream to control carryback. Swinderman stresses that safe maintenance access, adequate mounting distance from pulleys and integration with existing transfer‑point geometry are critical design constraints.

PT Pani Industri Nusantara, a subsidiary of PT Merdeka Copper Gold Tbk, has awarded Doppelmayr a contract to install Indonesia’s first RopeCon® system to move crushed gold ore from its Sulawesi mine directly to a carbon-in-leach processing plant. The fixed elevated conveyor-ropeway hybrid is designed to span difficult terrain with minimal tower foundations, reducing haul road construction and diesel truck use. For mine planners and geotechnical teams, the choice signals a shift towards long-distance, low-footprint ore transport in steep, infrastructure-poor topography.