ACI » Topics » Since 1970, coal has been used in increasingly clean ways in the U.S.

This excerpt taken from the ACI 8-K filed Nov 27, 2007.

Since 1970, coal has been used in                  
increasingly clean ways in the U.S.

Source: NMA

More progress is expected under existing regulations

Higher efficiency rates and the eventual deployment of coal gasification
technologies create opportunities for reducing carbon intensity as well

NOx (Nitrogen Oxide), SO2 (Sulfur Dioxide), PM10 (Particulate Matter)

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