Managing Air Quality at MTW

Management of air quality

MTW’s Air Quality Management Plan (AQMP) outlines how we manage and reduce air quality impacts to ensure that levels do not exceed the specified criteria.

Minimising dust

We try to reduce dust created by our operations in the following ways:

  • Using water trucks to dampen haul routes
  • Automatic activation of sprays at our hoppers when haul trucks dump their loads
  • Minimising tip heights
  • Restricting the removal of topsoil to ensure that it contains enough moisture
  • Enclosing coal processing areas
  • Modifying or shutting down mine operations during extreme weather, including windy and dry conditions
  • Covering coal conveyors and keeping stockpiles damp
  • Stabilising exposed areas through various techniques including aerial seeding
  • Rehabilitating mined land as soon as possible to reduce exposed areas
  • Restricting blasting during adverse weather conditions
  • Implementing overburden dumping restrictions in dust sensitive areas
  • Educating employees about minimising the generation of dust when operating heavy machinery

Community Response Officers

Community Response Officers (CROs) routinely undertake visual inspections of MTW’s operations, from inside and outside the mine’s boundary. They also validate real-time air quality alarms and advise the the mine shift coordinator of any problem dust sources.

Our CROs provide regular feedback to the mine shift coordinator (OCE) to help them to make changes to mining operations if dust levels are increasing, and to let them know whether the changes are working to reduce dust levels in real time.

CROs also speak with community members who voice concern regarding air quality. They receive and respond to complaints and inform community members of current conditions, and (if applicable), any changes which have been introduced to help control emissions.


MTW operates a network of real-time and static monitoring devices to measure compliance with air quality conditions. Real-time monitoring data is reviewed and reported daily through this website, while static monitoring data and more detailed trend information is made available on a monthly basis in the document library of this website. 

Meteorological data is collected on a continuous basis via the Charlton Ridge meteorological station. The meteorological station provides real-time data on key weather parameters such as wind speed and direction, allowing the operation to make informed decisions on blasting and dumping operations each day.

In 2010, the Upper Hunter Air Quality Monitoring Network (UHAQMN) was established to provide reliable, regional air quality monitoring data. Monitoring stations are located throughout the Upper Hunter, including Singleton and Muswellbrook. All of the monitoring sites measure dust particles, such as PM10, wind speed and wind direction. Data from the UHAQMN can be viewed at

Where can I find out more information?

The MTW Annual Environmental Review provides a summary of compliance monitoring data for the previous year. The MTW Air Quality Management Plan describes the measures employed to minimise air quality emissions each day.

All documents are available in our document library.