Technibelt was commissioned to investigate major belt mistracking issues at an underground coal mine in NSW. The mistracking posed a major risk to safety and business and resulted in a notice being issued to rectify the problem or cease operation of the conveyor. Technibelt belt tracking monitoring technology determined the mistracking exceeded 250 mm and was well outside AS 1332 requirements. The tracking data confirmed the excessive belt mistracking was inherent within all rolls of belt and independent of the alignment of structure, pulleys or splices. All rolls of belt were replaced under warranty.