Which of the following is NOT a function of a ventilation officer?

Conducting geological surveys is not a function of a ventilation officer. The primary responsibilities of a ventilation officer focus on ensuring that adequate air flow is maintained within the mine to protect the health and safety of the workers. This includes tasks such as overseeing the ventilation systems, making necessary adjustments to ventilation based on the mine’s requirements, and monitoring the quality and quantity of the air supply.

The role is critical in managing how air circulates within the mining environment, thus reducing hazards associated with poor air quality, like the build-up of harmful gases or insufficient breathable air. Geological surveys, on the other hand, pertain more to the study and mapping of the mine's geological features, which falls under the domain of geological or exploration teams rather than a ventilation officer.