Mine RFID Wifi Tags

Active Control Technology receives regulatory approval of its ActiveMine WiFi RFID tags that support wireless communications and location tracking for the mining industry. ...

... "The US Mine Safety and Health Administration (MSHA) has approved ActiveMine's RFID Wi-Fi Tags as intrinsically safe. The RFID Wi-Fi tags are a key component of the system that enable accurate and real-time tracking of people and assets and also offer auxiliary two-way messaging capability. " ...

Via Active Control Technology Inc: ActiveMines Rfid WiFi Tags