Mine Ventilation Australia (MVA) is a specialist, full-service mine and sub-surface ventilation engineering consultancy providing a highly professional, complete, one-stop service in sub-surface and mine ventilation, ventilation design, airflow estimation, fan, duct and tunnel sizing, forcing, exhausting and overlap systems, mine refrigeration and air-conditioning, working in heat protocols and heat illness, dusts and mine gases, diesel fumes and particulates, emergency escape (egress and entrapment) systems and planning, and training courses and seminars. The company provides expert advice on entrapment and escape design, integrated emergency systems and procedures, ventilation plant and equipment, equipment design, tender specifications, tender evaluation, plant performance and acceptance testing, outsourcing of day-to-day ventilation design, and maintenance of ventilation networks.