What is essential about the material used for a line brattice?

The principal reason why the material used for a line brattice should be made of incombustible material is due to the safety considerations in underground mining environments. A line brattice is used to direct airflow and improve ventilation in mine workings. Since underground mines can have a variety of potential ignition sources, using incombustible materials helps to prevent the spread of fire, ensuring the safety of mine workers and reducing the risk of catastrophic incidents.

Incombustible materials help to limit smoke generation and toxic fumes, which are critical during a fire event, enabling miners to evacuate more safely and efficiently. The focus on fire safety and prevention is a foundational aspect of mining regulations and best practices. Hence, selecting the right material is vital for ensuring the health and safety of all personnel within the mine.