Which of the following is NOT a function of bleeders?

The function of bleeders in underground mining is primarily to enhance safety and well-being in the mine's atmosphere. Bleeders are responsible for managing ventilation systems to ensure adequate fresh air is supplied and that harmful gases are effectively removed.

When considering the functions of bleeders, they significantly contribute to managing gob ventilation, which is the air movement around the mined-out areas (gobs) of the mine. This is crucial for controlling the environment in which miners work, helping to prevent gas accumulation and ensuring that dangerous gases, such as methane or carbon dioxide, do not reach unsafe levels.

The correct answer identifies that bleeders do not function to reduce airflow. In fact, the opposite is true; bleeders are meant to facilitate airflow in strategic ways, improving overall ventilation. Rather than reducing airflow, their purpose is aligned with improving miner safety and maintaining proper circulation of air, which is vital in mitigating the risks associated with underground mining.