April 2015 www.chemengonline.com 04 Metals Recycling Rectangular Tanks Facts at Your Fingertips: Industrial Microorganisms Gas Analysis Size Reduction Focus on Compressors, Fans and Blowers An Insider's Guide to Column Revamps page 38 Industrial Drying: Two-Part Feature Report Column Revamps * IndustRIal dRyIng vol. 122 no. 4 apRIl 2015http://www.chemengonline.com