When is pollution formed?

Particulate pollution can be formed by:

• Erosion of soil due to wind
  
• Condensation of chemicals in smoke
  
• Release of unburned solid fuel from fires
  
• Release of ashes from solid fuel burning
  
• Creation of carbon soot in poorly run combustion equipment
  
• Forest fires
  
• Dust and sand storms
  
• Grinding operations
  
• Sawdust emissions
  
• Metal fume emission
  
• Grain milling
• Sandblasting
• Cement manufacture
• Mining operations (blasting, smelting)
• During the shipping of pulverized materials
• Diesel exhaust