Ventilation load and machine selection underground

Underground machine selection starts with the ventilation plan, not the payload. Engine emissions rating and the airflow available at the heading determine how much diesel equipment can operate at once.

Where ventilation is constrained, a smaller LHD running more cycles frequently outperforms a larger machine that cannot legally operate alongside the haulers.

Battery-electric and low-emission diesel options change this calculation significantly, particularly at depth where ventilation cost dominates.

We confirm the emissions rating of every underground unit against your ventilation plan before dispatch, and provide the documentation for your safety file.