The system has been designed to meet the federal MINER Act of 2006 for wireless systems, which requires that all mining companies must have wireless two-way communication systems and equip each miner with an electronic tracking device within three years.

The latest submission marks the final regulatory filing for ActiveMine with the Mine Safety and Health Administration. The system has already been approved by West Virginia's Office of Miners' Health, Safety and Training.

Active Control Technology president and chief executive Steve Barrett said: "With the MSHA filing process now complete, our efforts are focused on facilitating approvals as quickly as possible and, above all, generating purchase orders for ActiveMine."

ActiveMine is designed to improve underground mining safety and enhance operating efficiencies through wireless, real-time electronic tracking of personnel and equipment and robust two-way voice communications with each miner.

The company said the system's 100 percent wireless network architecture made it easy to install and extend as the mine face advanced, while significantly reducing maintenance costs arising from the frequent mechanical damage suffered by traditional hard-wired mine communication networks.