The following is required to be on a working section

• A. None
• B. Two-way communication or telephone
• C. Radio
• D. Computer terminal

Answer: (B)

Reliable two-way communication on a working section is essential for safety. Miners need to talk directly with the surface or mine control and with each other to report hazards, coordinate moves with equipment operators, and summon help immediately if something goes wrong. Underground conditions can change quickly, and delays in getting important information can lead to serious injuries. Having a two-way communication setup (which can include a telephone system) guarantees a direct, prompt line for critical information flow, making it the most dependable safety measure on a working section. A computer terminal isn’t typically required in that context, and while radios are a common form of two-way communication, the key point is that there is a reliable bidirectional link available.