Kingsport-Based Eastman Chemical Company Is Switching From Coal To Natural Gas. The Chemical Giant Over The Past Three Years Has Converted Four Boilers And Two Domestic Sites Over To Natural Gas. More Boilers Are On Tap To Be Converted In 2018. This Marks The Largest Air Pollution Control Project In The Company’s History. Eastman Is Also On Track To Reduce Greenhouse Gas Emissions, Nitrogen, Nitrogen Oxide, Sulfur Dioxide Emissions And Reportable Releases.