What is the purpose of a ventilation plan in a surface coal mine?

• A. To monitor weather.
• B. To control airflow, dilute and remove methane and dust, and provide a safe atmosphere for workers.
• C. To increase production.
• D. To schedule shifts.

Answer: (B)

The main purpose of a ventilation plan in a surface coal mine is to control airflow so that methane and dust are diluted and carried away, creating a safe atmosphere for workers. By outlining how air moves through intake and return routes, where fans and doors should be placed, and how to monitor gas levels, the plan ensures there is enough fresh oxygen and that hazardous gases are kept at low, non-explosive concentrations. This is essential because methane buildup can trigger explosions, and dust can harm miners’ lungs; proper ventilation reduces these risks and supports overall mine safety.

Other ideas like monitoring weather, boosting production, or scheduling shifts aren’t the primary aim of the ventilation plan, which is fundamentally about managing air quality and safety for the workforce.