What does the incoming communication signal trigger on the working section?

What does the incoming communication signal trigger on the working section?

• A. An audible alarm on the mine phone
• B. A visual alarm on a surface panel
• C. An audible or visual alarm on the mine phone
• D. A radio notification to the foreman

Answer: (C)

The signal is designed to grab attention right where miners are working, so the alert is built into the section’s mine phone. When a call or page comes in, the device produces an audible alarm and may also flash a visual indicator. This dual alert makes sure the message is noticed even in noisy underground conditions or if someone can’t hear clearly. It isn’t limited to a surface panel or to telling the foreman by radio—the alert is specifically on the mine phone used on the working section.

The signal is designed to grab attention right where miners are working, so the alert is built into the section’s mine phone. When a call or page comes in, the device produces an audible alarm and may also flash a visual indicator. This dual alert makes sure the message is noticed even in noisy underground conditions or if someone can’t hear clearly. It isn’t limited to a surface panel or to telling the foreman by radio—the alert is specifically on the mine phone used on the working section.