Dual frequency RFID was developed to overcome limitations of other RFID technologies for tracking assets and people in mining operations. It uses low frequency for tag energizing and high frequency for communication, allowing longer read ranges than HF through liquids and metals. A deployment at Anglo Platinum mines successfully used DF RFID to track 5000 cap lamp batteries and other equipment, improving safety and productivity. The system is being expanded to additional applications and integrated with other systems.