Which persons can deal with a fan?

• A. Only the mine's ventilation officer.
• B. ERZ controller for the place; Persons authorised by the mine's ventilation officer to deal with the fan; Persons directed to deal with the fan by the ERZ controller for the place or a person authorised to deal with the fan.
• C. Any supervisor.
• D. Any crew member with basic training.

Answer: (D)

The key idea is who is authorized to handle a fan based on competency and safety procedures. In this context, dealing with a fan is a safety-critical task, but having completed basic training equips frontline crew to perform the essential actions confidently—such as turning the fan on or off, isolating it, or following lock-out procedures as required—without needing higher-level authorization for each move. This ensures quick, competent response by those on shift.

The other options impose more restrictive or broader requirements than necessary. Limiting it to the ventilation officer keeps control too tight for routine handling. Requiring an ERZ controller or another specific role adds unnecessary layers for normal operations. Saying any supervisor is allowed is broader than needed for routine tasks. With basic training, a crew member can responsibly deal with the fan, which is the distribution of responsibility that matches practical on-site needs and safety practices.