Which of the following is not part of the required knowledge for communication center personnel?

The ability to administer first aid, while certainly a valuable skill in the mine environment, is not a specific requirement for communication center personnel. The primary focus for personnel in a communication center is to effectively handle information flow, maintain communication networks, and ensure the safety and coordination of mine operations through communication.

In contrast, knowledge of tracking devices, understanding of travelways, and awareness of mine layout are essential for communication center personnel as they need to effectively direct operations and provide accurate information regarding personnel locations and safety measures within the mine. Knowing how to track individuals and understanding the mine's infrastructure enables them to respond appropriately in emergencies and coordinate rescue efforts if necessary.

Thus, the emphasis for communication center personnel is on facilitating communication and coordination rather than direct medical intervention, making the ability to administer first aid not a part of their required knowledge.