88877971_he_Environment_2011__SoE_2011__nts_and_fine_particles__PM2_5__Major_sources
[Pollutant] Carbon monoxide [Major sources] 
Combustion, including vegetation burning and wildfires, motor vehicles and metal manufacturing
3.1 State and trends of Australia's atmosphere | 3 Ambient air quality and other atmospheric issues | 3 Atmosphere | State of the Environment 2011 (SoE 2011)
Major sources