An efficient process control relies on accurate real-time measurements. The Courier® 6G SL analyzer enables direct measurement of gold from ore feed, concentrate and tailings streams. This leads to improved process stability and significant recovery improvements. The Metso Outotec Courier 6G SL is a highly-sensitive evolution of Courier 6X SL analyzer with a higher power X-ray tube and measurement channels optimized for direct on-line measurement of gold in low concentrations from the slurry stream. It offers unprecedented accuracy for process management without interference from the mineral composition changes.