Criteria Air Pollutants

Criteria Air Pollutants (000 tonnes)
Source: PotashCorp
	2005	2006	2007	2008	2009
Nitrogen oxides	6.7	6.6	7.1	6.9	5.4
Carbon monoxide	5.0	5.9	11.7	5.0	4.6
Particulates (dust)	4.7	4.0	4.6	4.2	3.4
Sulfur dioxide	17.3	14.6	15.0	14.5	12.6